{"title":"VariCel Box Filters | AAF Flanders Commercial Rigid Cell","description":"\u003csection\u003e\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eVariCel® filters are high-capacity, extended surface, supported box filters designed for a wide range of applications. Their rigid construction and supported pleat media ensure durability, even in harsh operating environments with variable air volume, turbulent airflow, high humidity, and exposure to moisture. These filters are particularly suited for seacoast installations and high-dust environments.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAvailable in MERV 15, MERV 14, MERV 13, and MERV 11 efficiencies\u003c\/li\u003e\n\u003cli\u003eEngineered for excellent performance in challenging conditions\u003c\/li\u003e\n\u003cli\u003eMERV 14 available with antimicrobial treatment\u003c\/li\u003e\n\u003cli\u003eMERV 15, MERV 14, and MERV 13 available for high-efficiency commercial applications\u003c\/li\u003e\n\u003cli\u003eUL Classified for reliable performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDual-Density Media for Cost Savings\u003c\/h2\u003e\n\u003cp\u003eThe dual-density media design, with coarser fibers on the air entering side and finer fibers on the air leaving side, maximizes dust-holding capacity, extending filter life and reducing operating costs. VariCel filters are water-resistant, making them ideal for humid conditions.\u003c\/p\u003e\n\u003ch2\u003eDesigned to Improve Indoor Air Quality (IAQ)\u003c\/h2\u003e\n\u003cp\u003eVariCel filters, particularly in MERV 14 and MERV 15 ratings, effectively capture fine particles, including bacteria and viruses, improving indoor air quality. The MERV 14 version is also available with antimicrobial-treated media to preserve filter integrity throughout its lifespan.\u003c\/p\u003e\n\u003ch2\u003eProduct Options\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAvailable in 12″ and 6″ depths for different air flow needs\u003c\/li\u003e\n\u003cli\u003eOptional faceguards made of galvanized or aluminized steel\u003c\/li\u003e\n\u003cli\u003eFactory-installed gaskets for easy installation\u003c\/li\u003e\n\u003cli\u003eVinyl-coated separators for corrosive environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerformance Data\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOperating temperature limits: up to 900°F, depending on the filter type\u003c\/li\u003e\n\u003cli\u003eRecommended final resistance: 1.5″ w.g. (1.2″ w.g. for HT filters)\u003c\/li\u003e\n\u003cli\u003eTested in accordance with ASHRAE Standard 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","products":[{"product_id":"331-953-158-varicel-1121953-158-sh-merv-11-20x25x12","title":"20x25x12 AAF Flanders VariCel Single Header MERV 11 331-953-158 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 25″ × 12″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-953-158) delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 11 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 11 captures\u003c\/h3\u003e\n\u003cp\u003eFine dust, pollen, pet dander, mold spores, smoke particles, and smaller allergens. MERV 11 is the standard recommendation for households with allergies, asthma, or pets, and is commonly specified for commercial office spaces where indoor air quality is a priority. Confirm your system can handle the slight increase in static pressure compared to MERV 8.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":39671608311930,"sku":"331-953-158","price":257.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_ba906883-8a5d-49c8-a7e3-d2e6d9cc318e.png?v=1729221968"},{"product_id":"24x24x12-aaf-flanders-varicel-single-header-merv-14-331-946-148","title":"24x24x12 AAF Flanders VariCel Single Header MERV 14 331-946-148 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 24″ × 12″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-946-148) delivers \u003cstrong\u003eMERV 14\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 14 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 14 captures\u003c\/h3\u003e\n\u003cp\u003eSub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":39829014446202,"sku":"331-946-148","price":252.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_b3426d3c-5f6d-43ea-896a-346fbee8511b.png?v=1729221971"},{"product_id":"aaf-flanders-varicel-ii-extended-surface-mini-pleat-filter","title":"AAF Flanders VariCel II Extended Surface Mini-Pleat MERV 13 332-528-XXX (4 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel II Extended Surface Mini-Pleat\u003c\/strong\u003e filter (part number 332-528-XXX) delivers \u003cstrong\u003eMERV 13\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe VariCel II uses a \u003cstrong\u003emini-pleat\u003c\/strong\u003e extended-surface design — dramatically more filter media in the same footprint, with superior dust-holding capacity in high-humidity and turbulent-airflow conditions.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Mini-pleat extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e High wet-strength two-piece die-cut construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single, double, or no-header configurations available\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 13 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 13 captures\u003c\/h3\u003e\n\u003cp\u003eVery fine particles including smoke, bacteria-sized particles, and virus carriers attached to larger droplets, on top of everything MERV 11 captures. Commonly specified for commercial spaces with higher indoor-air-quality requirements and for homes with wildfire smoke or air-quality concerns. Ensure your HVAC system is rated for the increased static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":44079613706362,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/products\/VariCel_II.png?v=1759425608"},{"product_id":"aaf-flanders-899765-136-var-sh-m13-20x20x12-331-765-136","title":"20x20x12 AAF Flanders VariCel Single Header MERV 13 331-765-136 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 20″ × 12″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-765-136) delivers \u003cstrong\u003eMERV 13\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 13 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 13 captures\u003c\/h3\u003e\n\u003cp\u003eVery fine particles including smoke, bacteria-sized particles, and virus carriers attached to larger droplets, on top of everything MERV 11 captures. Commonly specified for commercial spaces with higher indoor-air-quality requirements and for homes with wildfire smoke or air-quality concerns. Ensure your HVAC system is rated for the increased static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43479525884026,"sku":"331-765-136","price":240.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_4f88c865-805c-43f0-9b97-367a9d60508f.png?v=1759425637"},{"product_id":"aaf-flanders-899765-189-varicel-single-header-merv-13-20x24x12-331-765-189","title":"20x24x12 AAF Flanders VariCel Single Header MERV 13 331-765-189 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 24″ × 12″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-765-189) delivers \u003cstrong\u003eMERV 13\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 13 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 13 captures\u003c\/h3\u003e\n\u003cp\u003eVery fine particles including smoke, bacteria-sized particles, and virus carriers attached to larger droplets, on top of everything MERV 11 captures. Commonly specified for commercial spaces with higher indoor-air-quality requirements and for homes with wildfire smoke or air-quality concerns. Ensure your HVAC system is rated for the increased static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43479528898682,"sku":"331-765-189","price":252.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_53a91755-618a-4c81-9fbb-6f376ed20926.png?v=1729221979"},{"product_id":"20x24x4-aaf-flanders-varicel-ii-merv-14-filter-332-510-006-1-filter","title":"20x24x4 AAF Flanders VariCel II Extended Surface Mini-Pleat MERV 14 332-510-006 (4 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 24″ × 4″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel II Extended Surface Mini-Pleat\u003c\/strong\u003e filter (part number 332-510-006) delivers \u003cstrong\u003eMERV 14\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe VariCel II uses a \u003cstrong\u003emini-pleat\u003c\/strong\u003e extended-surface design — dramatically more filter media in the same footprint, with superior dust-holding capacity in high-humidity and turbulent-airflow conditions.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Mini-pleat extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e High wet-strength two-piece die-cut construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single, double, or no-header configurations available\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 14 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 14 captures\u003c\/h3\u003e\n\u003cp\u003eSub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43486504190074,"sku":"332-510-006","price":545.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/products\/VariCel_II_58047c47-0578-40ef-b427-8705e7a235e9.png?v=1759425730"},{"product_id":"24x24x4-aaf-flanders-varicel-ii-merv-14-filter-332-510-008-1-filter","title":"24x24x4 AAF Flanders VariCel II Extended Surface Mini-Pleat MERV 13 332-510-008 (4 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 24″ × 4″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel II Extended Surface Mini-Pleat\u003c\/strong\u003e filter (part number 332-510-008) delivers \u003cstrong\u003eMERV 13\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe VariCel II uses a \u003cstrong\u003emini-pleat\u003c\/strong\u003e extended-surface design — dramatically more filter media in the same footprint, with superior dust-holding capacity in high-humidity and turbulent-airflow conditions.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Mini-pleat extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e High wet-strength two-piece die-cut construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single, double, or no-header configurations available\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 13 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 13 captures\u003c\/h3\u003e\n\u003cp\u003eVery fine particles including smoke, bacteria-sized particles, and virus carriers attached to larger droplets, on top of everything MERV 11 captures. Commonly specified for commercial spaces with higher indoor-air-quality requirements and for homes with wildfire smoke or air-quality concerns. Ensure your HVAC system is rated for the increased static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43486504779898,"sku":"332-510-008","price":618.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/products\/VariCel_II_40d51ea2-8d7c-47f6-ab7a-ba1468f77209.png?v=1678138021"},{"product_id":"16x25x4-aaf-flanders-varicel-ii-merv-14-filter-332-528-203-1-filter","title":"16x25x4 AAF Flanders VariCel II Extended Surface Mini-Pleat MERV 14 332-528-203 (4 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e16″ × 25″ × 4″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel II Extended Surface Mini-Pleat\u003c\/strong\u003e filter (part number 332-528-203) delivers \u003cstrong\u003eMERV 14\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe VariCel II uses a \u003cstrong\u003emini-pleat\u003c\/strong\u003e extended-surface design — dramatically more filter media in the same footprint, with superior dust-holding capacity in high-humidity and turbulent-airflow conditions.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Mini-pleat extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e High wet-strength two-piece die-cut construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single, double, or no-header configurations available\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 14 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 14 captures\u003c\/h3\u003e\n\u003cp\u003eSub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43520515866746,"sku":"332-528-203","price":614.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_II_bc706b5d-d713-4960-87f6-89affddd08f9.png?v=1683740592"},{"product_id":"aaf-flanders-899765-150-varicel-single-header-merv-13-20x20x12-331-765-150","title":"12x24x12 AAF Flanders VariCel Single Header MERV 13 331-765-150 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e12″ × 24″ × 12″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-765-150) delivers \u003cstrong\u003eMERV 13\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 13 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 13 captures\u003c\/h3\u003e\n\u003cp\u003eVery fine particles including smoke, bacteria-sized particles, and virus carriers attached to larger droplets, on top of everything MERV 11 captures. Commonly specified for commercial spaces with higher indoor-air-quality requirements and for homes with wildfire smoke or air-quality concerns. Ensure your HVAC system is rated for the increased static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43524071456890,"sku":"331-765-150","price":231.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_185be552-333e-4365-bcdc-49ee1aeca160.png?v=1729221982"},{"product_id":"24x24x12-w-gasket-aaf-flanders-varicel-merv-14-331-946-148-gk","title":"24x24x12 AAF Flanders VariCel w\/ Gasket MERV 14 331-946-148 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 24″ × 12″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-946-148) delivers \u003cstrong\u003eMERV 14\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single, double, or no-header configurations available\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 14 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 14 captures\u003c\/h3\u003e\n\u003cp\u003eSub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43547173683322,"sku":"331-946-148-GK","price":282.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_a8ff3086-ccf7-4afc-b8bc-2d570c4bbd8a.png?v=1729221985"},{"product_id":"12x24x12-aaf-flanders-varicel-single-header-merv-14-331-946-150","title":"12x24x12 AAF Flanders VariCel Single Header MERV 14 331-946-150 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e12″ × 24″ × 12″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-946-150) delivers \u003cstrong\u003eMERV 14\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 14 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 14 captures\u003c\/h3\u003e\n\u003cp\u003eSub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43558038962298,"sku":"331-946-150","price":214.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_4842a794-68dc-46d7-8c7e-f6e66c5cd580.png?v=1729221989"},{"product_id":"24x24x4-aaf-flanders-varicel-ii-merv-14-filter-332-502-008-1-filter","title":"24x24x4 AAF Flanders VariCel II Extended Surface Mini-Pleat MERV 11 332-502-008 (4 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 24″ × 4″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel II Extended Surface Mini-Pleat\u003c\/strong\u003e filter (part number 332-502-008) delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe VariCel II uses a \u003cstrong\u003emini-pleat\u003c\/strong\u003e extended-surface design — dramatically more filter media in the same footprint, with superior dust-holding capacity in high-humidity and turbulent-airflow conditions.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Mini-pleat extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e High wet-strength two-piece die-cut construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single, double, or no-header configurations available\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 11 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 11 captures\u003c\/h3\u003e\n\u003cp\u003eFine dust, pollen, pet dander, mold spores, smoke particles, and smaller allergens. MERV 11 is the standard recommendation for households with allergies, asthma, or pets, and is commonly specified for commercial office spaces where indoor air quality is a priority. Confirm your system can handle the slight increase in static pressure compared to MERV 8.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43600700899450,"sku":"332-502-008","price":487.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_II_411ae503-dabf-4292-b7c0-aae2c73f9333.png?v=1697571287"},{"product_id":"16x20x12-aaf-flanders-331-946-156-varicel-single-header-1121946-156-merv-14","title":"16x20x12 AAF Flanders VariCel Single Header MERV 14 331-946-156 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e16″ × 20″ × 12″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-946-156) delivers \u003cstrong\u003eMERV 14\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 14 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 14 captures\u003c\/h3\u003e\n\u003cp\u003eSub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43838206640250,"sku":"331-946-156","price":226.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_a7f558e9-9bd9-4090-a22a-a01416141d0d.png?v=1729221992"},{"product_id":"24x24x4-aaf-flanders-varicel-ii-merv-14-filter-332-528-008-4-filters","title":"24x24x4 AAF Flanders VariCel II Extended Surface Mini-Pleat MERV 14 332-528-008 (4 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 24″ × 4″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel II Extended Surface Mini-Pleat\u003c\/strong\u003e filter (part number 332-528-008) delivers \u003cstrong\u003eMERV 14\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe VariCel II uses a \u003cstrong\u003emini-pleat\u003c\/strong\u003e extended-surface design — dramatically more filter media in the same footprint, with superior dust-holding capacity in high-humidity and turbulent-airflow conditions.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Mini-pleat extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e High wet-strength two-piece die-cut construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single, double, or no-header configurations available\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 14 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 14 captures\u003c\/h3\u003e\n\u003cp\u003eSub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43877189550202,"sku":"332-528-008","price":729.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/products\/VariCel_II_40d51ea2-8d7c-47f6-ab7a-ba1468f77209.png?v=1678138021"},{"product_id":"20x20x6-aaf-flanders-varicel-single-header-merv-13-331-765-135","title":"20x20x6 AAF Flanders VariCel Single Header MERV 13 331-765-135 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 20″ × 6″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-765-135) delivers \u003cstrong\u003eMERV 13\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 13 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 13 captures\u003c\/h3\u003e\n\u003cp\u003eVery fine particles including smoke, bacteria-sized particles, and virus carriers attached to larger droplets, on top of everything MERV 11 captures. Commonly specified for commercial spaces with higher indoor-air-quality requirements and for homes with wildfire smoke or air-quality concerns. Ensure your HVAC system is rated for the increased static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885744914554,"sku":"331-765-135","price":639.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_3c4a7d9c-6a1f-4459-a127-dd426558e1d2.png?v=1729222376"},{"product_id":"24x24x6-aaf-flanders-varicel-single-header-merv-13-331-765-147-2-pack","title":"24x24x6 AAF Flanders VariCel Single Header MERV 13 331-765-147 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 24″ × 6″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-765-147) delivers \u003cstrong\u003eMERV 13\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 13 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 13 captures\u003c\/h3\u003e\n\u003cp\u003eVery fine particles including smoke, bacteria-sized particles, and virus carriers attached to larger droplets, on top of everything MERV 11 captures. Commonly specified for commercial spaces with higher indoor-air-quality requirements and for homes with wildfire smoke or air-quality concerns. Ensure your HVAC system is rated for the increased static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885745078394,"sku":"331-765-147","price":717.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_00e5a1da-9623-4a81-b70f-09ceb67066f4.png?v=1729222385"},{"product_id":"24x24x12-aaf-flanders-varicel-single-header-merv-13-331-765-148","title":"24x24x12 AAF Flanders VariCel Single Header MERV 13 331-765-148 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 24″ × 12″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-765-148) delivers \u003cstrong\u003eMERV 13\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 13 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 13 captures\u003c\/h3\u003e\n\u003cp\u003eVery fine particles including smoke, bacteria-sized particles, and virus carriers attached to larger droplets, on top of everything MERV 11 captures. Commonly specified for commercial spaces with higher indoor-air-quality requirements and for homes with wildfire smoke or air-quality concerns. Ensure your HVAC system is rated for the increased static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885745176698,"sku":"331-765-148","price":274.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_75800259-4ab9-46f6-9f33-614a85c18335.png?v=1729222393"},{"product_id":"12x24x6-aaf-flanders-varicel-single-header-merv-13-331-765-149-2-pack","title":"12x24x6 AAF Flanders VariCel Single Header MERV 13 331-765-149 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e12″ × 24″ × 6″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-765-149) delivers \u003cstrong\u003eMERV 13\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 13 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 13 captures\u003c\/h3\u003e\n\u003cp\u003eVery fine particles including smoke, bacteria-sized particles, and virus carriers attached to larger droplets, on top of everything MERV 11 captures. Commonly specified for commercial spaces with higher indoor-air-quality requirements and for homes with wildfire smoke or air-quality concerns. Ensure your HVAC system is rated for the increased static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885745340538,"sku":"331-765-149","price":581.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_e4a162d8-a034-417e-9bda-cd96bf1ad560.png?v=1759428518"},{"product_id":"18x24x6-aaf-flanders-varicel-single-header-merv-13-331-765-151-2-pack","title":"18x24x6 AAF Flanders VariCel Single Header MERV 13 331-765-151 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e18″ × 24″ × 6″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-765-151) delivers \u003cstrong\u003eMERV 13\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 13 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 13 captures\u003c\/h3\u003e\n\u003cp\u003eVery fine particles including smoke, bacteria-sized particles, and virus carriers attached to larger droplets, on top of everything MERV 11 captures. Commonly specified for commercial spaces with higher indoor-air-quality requirements and for homes with wildfire smoke or air-quality concerns. Ensure your HVAC system is rated for the increased static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885745438842,"sku":"331-765-151","price":427.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_72f76cd1-7ece-4332-a0c0-fdc0c19c5e61.png?v=1729222407"},{"product_id":"18x24x12-aaf-flanders-varicel-single-header-merv-13-331-765-152","title":"18x24x12 AAF Flanders VariCel Single Header MERV 13 331-765-152 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e18″ × 24″ × 12″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-765-152) delivers \u003cstrong\u003eMERV 13\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 13 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 13 captures\u003c\/h3\u003e\n\u003cp\u003eVery fine particles including smoke, bacteria-sized particles, and virus carriers attached to larger droplets, on top of everything MERV 11 captures. Commonly specified for commercial spaces with higher indoor-air-quality requirements and for homes with wildfire smoke or air-quality concerns. Ensure your HVAC system is rated for the increased static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885745602682,"sku":"331-765-152","price":251.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_46da6efd-f82e-4712-98d2-272d476bae2a.png?v=1729222414"},{"product_id":"16x20x6-aaf-flanders-varicel-single-header-merv-13-331-765-155-2-pack","title":"16x20x6 AAF Flanders VariCel Single Header MERV 13 331-765-155 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e16″ × 20″ × 6″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-765-155) delivers \u003cstrong\u003eMERV 13\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 13 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 13 captures\u003c\/h3\u003e\n\u003cp\u003eVery fine particles including smoke, bacteria-sized particles, and virus carriers attached to larger droplets, on top of everything MERV 11 captures. Commonly specified for commercial spaces with higher indoor-air-quality requirements and for homes with wildfire smoke or air-quality concerns. Ensure your HVAC system is rated for the increased static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885745766522,"sku":"331-765-155","price":339.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_01180def-8cda-44c1-8ef9-67e5a787f966.png?v=1729222423"},{"product_id":"16x20x12-aaf-flanders-varicel-single-header-merv-13-331-765-156","title":"16x20x12 AAF Flanders VariCel Single Header MERV 13 331-765-156 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e16″ × 20″ × 12″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-765-156) delivers \u003cstrong\u003eMERV 13\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 13 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 13 captures\u003c\/h3\u003e\n\u003cp\u003eVery fine particles including smoke, bacteria-sized particles, and virus carriers attached to larger droplets, on top of everything MERV 11 captures. Commonly specified for commercial spaces with higher indoor-air-quality requirements and for homes with wildfire smoke or air-quality concerns. Ensure your HVAC system is rated for the increased static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885745897594,"sku":"331-765-156","price":217.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_c16ac304-6ae1-416d-8709-1c40bee24d37.png?v=1759428519"},{"product_id":"20x25x6-aaf-flanders-varicel-single-header-merv-13-331-765-157","title":"20x25x6 AAF Flanders VariCel Single Header MERV 13 331-765-157 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 25″ × 6″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-765-157) delivers \u003cstrong\u003eMERV 13\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 13 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 13 captures\u003c\/h3\u003e\n\u003cp\u003eVery fine particles including smoke, bacteria-sized particles, and virus carriers attached to larger droplets, on top of everything MERV 11 captures. Commonly specified for commercial spaces with higher indoor-air-quality requirements and for homes with wildfire smoke or air-quality concerns. Ensure your HVAC system is rated for the increased static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885746028666,"sku":"331-765-157","price":701.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_1c125ed8-351c-481b-94cb-173be812d82e.png?v=1759428519"},{"product_id":"20x25x12-aaf-flanders-varicel-single-header-merv-13-331-765-158","title":"20x25x12 AAF Flanders VariCel Single Header MERV 13 331-765-158 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 25″ × 12″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-765-158) delivers \u003cstrong\u003eMERV 13\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 13 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 13 captures\u003c\/h3\u003e\n\u003cp\u003eVery fine particles including smoke, bacteria-sized particles, and virus carriers attached to larger droplets, on top of everything MERV 11 captures. Commonly specified for commercial spaces with higher indoor-air-quality requirements and for homes with wildfire smoke or air-quality concerns. Ensure your HVAC system is rated for the increased static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885746159738,"sku":"331-765-158","price":266.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_00630d3d-7d78-45af-94a7-e609559d7402.png?v=1759428521"},{"product_id":"16x25x6-aaf-flanders-varicel-single-header-merv-13-331-765-184","title":"16x25x6 AAF Flanders VariCel Single Header MERV 13 331-765-184 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e16″ × 25″ × 6″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-765-184) delivers \u003cstrong\u003eMERV 13\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 13 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 13 captures\u003c\/h3\u003e\n\u003cp\u003eVery fine particles including smoke, bacteria-sized particles, and virus carriers attached to larger droplets, on top of everything MERV 11 captures. Commonly specified for commercial spaces with higher indoor-air-quality requirements and for homes with wildfire smoke or air-quality concerns. Ensure your HVAC system is rated for the increased static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885746290810,"sku":"331-765-184","price":650.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_2bec230f-897e-41b7-bda4-b510eef0ecd8.png?v=1759428521"},{"product_id":"16x25x12-aaf-flanders-varicel-single-header-merv-13-331-765-185","title":"16x25x12 AAF Flanders VariCel Single Header MERV 13 331-765-185 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e16″ × 25″ × 12″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-765-185) delivers \u003cstrong\u003eMERV 13\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 13 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 13 captures\u003c\/h3\u003e\n\u003cp\u003eVery fine particles including smoke, bacteria-sized particles, and virus carriers attached to larger droplets, on top of everything MERV 11 captures. Commonly specified for commercial spaces with higher indoor-air-quality requirements and for homes with wildfire smoke or air-quality concerns. Ensure your HVAC system is rated for the increased static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885746421882,"sku":"331-765-185","price":242.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_955b2200-187c-480c-928e-f1cb4539e58d.png?v=1729222462"},{"product_id":"12x24x6-aaf-flanders-varicel-single-header-merv-13-331-765-188-2-pack","title":"12x24x6 AAF Flanders VariCel Single Header MERV 13 331-765-188 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e12″ × 24″ × 6″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-765-188) delivers \u003cstrong\u003eMERV 13\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 13 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 13 captures\u003c\/h3\u003e\n\u003cp\u003eVery fine particles including smoke, bacteria-sized particles, and virus carriers attached to larger droplets, on top of everything MERV 11 captures. Commonly specified for commercial spaces with higher indoor-air-quality requirements and for homes with wildfire smoke or air-quality concerns. Ensure your HVAC system is rated for the increased static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885746552954,"sku":"331-765-188","price":362.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_a6aad066-1c5c-49aa-b1c1-534462a483d6.png?v=1729222469"},{"product_id":"12x20x6-aaf-flanders-varicel-single-header-merv-13-331-765-190-2-pack","title":"12x20x6 AAF Flanders VariCel Single Header MERV 13 331-765-190 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e12″ × 20″ × 6″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-765-190) delivers \u003cstrong\u003eMERV 13\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 13 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 13 captures\u003c\/h3\u003e\n\u003cp\u003eVery fine particles including smoke, bacteria-sized particles, and virus carriers attached to larger droplets, on top of everything MERV 11 captures. Commonly specified for commercial spaces with higher indoor-air-quality requirements and for homes with wildfire smoke or air-quality concerns. Ensure your HVAC system is rated for the increased static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885746684026,"sku":"331-765-190","price":321.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_0508728f-1321-4df3-b8d1-779aa4aea642.png?v=1759428522"},{"product_id":"12x20x12-aaf-flanders-varicel-single-header-merv-13-331-765-191","title":"12x20x12 AAF Flanders VariCel Single Header MERV 13 331-765-191 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e12″ × 20″ × 12″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-765-191) delivers \u003cstrong\u003eMERV 13\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 13 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 13 captures\u003c\/h3\u003e\n\u003cp\u003eVery fine particles including smoke, bacteria-sized particles, and virus carriers attached to larger droplets, on top of everything MERV 11 captures. Commonly specified for commercial spaces with higher indoor-air-quality requirements and for homes with wildfire smoke or air-quality concerns. Ensure your HVAC system is rated for the increased static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885746815098,"sku":"331-765-191","price":200.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_3fdf856a-dcab-45c0-8e0c-eb0e9eb9cc97.png?v=1729222483"},{"product_id":"20x20x6-aaf-flanders-varicel-single-header-merv-11-331-953-135-2-pack","title":"20x20x6 AAF Flanders VariCel Single Header MERV 11 331-953-135 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 20″ × 6″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-953-135) delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 11 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 11 captures\u003c\/h3\u003e\n\u003cp\u003eFine dust, pollen, pet dander, mold spores, smoke particles, and smaller allergens. MERV 11 is the standard recommendation for households with allergies, asthma, or pets, and is commonly specified for commercial office spaces where indoor air quality is a priority. Confirm your system can handle the slight increase in static pressure compared to MERV 8.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885746946170,"sku":"331-953-135","price":343.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_3c0db2d3-532d-46cb-b531-0812d5e816ae.png?v=1759428522"},{"product_id":"20x20x12-aaf-flanders-varicel-single-header-merv-11-331-953-136","title":"20x20x12 AAF Flanders VariCel Single Header MERV 11 331-953-136 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 20″ × 12″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-953-136) delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 11 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 11 captures\u003c\/h3\u003e\n\u003cp\u003eFine dust, pollen, pet dander, mold spores, smoke particles, and smaller allergens. MERV 11 is the standard recommendation for households with allergies, asthma, or pets, and is commonly specified for commercial office spaces where indoor air quality is a priority. Confirm your system can handle the slight increase in static pressure compared to MERV 8.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885747077242,"sku":"331-953-136","price":254.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_fc43bb24-bc5a-4944-b1a4-8eb8196c76e5.png?v=1759428524"},{"product_id":"24x24x6-aaf-flanders-varicel-single-header-merv-11-331-953-147","title":"24x24x6 AAF Flanders VariCel Single Header MERV 11 331-953-147 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 24″ × 6″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-953-147) delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 11 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 11 captures\u003c\/h3\u003e\n\u003cp\u003eFine dust, pollen, pet dander, mold spores, smoke particles, and smaller allergens. MERV 11 is the standard recommendation for households with allergies, asthma, or pets, and is commonly specified for commercial office spaces where indoor air quality is a priority. Confirm your system can handle the slight increase in static pressure compared to MERV 8.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885747175546,"sku":"331-953-147","price":713.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_a7aab83a-5d8c-4e45-9d41-c0503c0a7bee.png?v=1729222503"},{"product_id":"24x24x12-aaf-flanders-varicel-single-header-merv-11-331-953-148","title":"24x24x12 AAF Flanders VariCel Single Header MERV 11 331-953-148 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 24″ × 12″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-953-148) delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 11 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 11 captures\u003c\/h3\u003e\n\u003cp\u003eFine dust, pollen, pet dander, mold spores, smoke particles, and smaller allergens. MERV 11 is the standard recommendation for households with allergies, asthma, or pets, and is commonly specified for commercial office spaces where indoor air quality is a priority. Confirm your system can handle the slight increase in static pressure compared to MERV 8.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885747339386,"sku":"331-953-148","price":252.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_4b8fbeaa-b6dc-445e-9e12-8b76f6885f64.png?v=1729222511"},{"product_id":"12x24x6-aaf-flanders-varicel-single-header-merv-11-331-953-149-2-pack","title":"12x24x6 AAF Flanders VariCel Single Header MERV 11 331-953-149 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e12″ × 24″ × 6″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-953-149) delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 11 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 11 captures\u003c\/h3\u003e\n\u003cp\u003eFine dust, pollen, pet dander, mold spores, smoke particles, and smaller allergens. MERV 11 is the standard recommendation for households with allergies, asthma, or pets, and is commonly specified for commercial office spaces where indoor air quality is a priority. Confirm your system can handle the slight increase in static pressure compared to MERV 8.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885747437690,"sku":"331-953-149","price":314.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_efd1cac3-ee2e-4142-a5aa-9459d3de2a70.png?v=1729222517"},{"product_id":"12x24x12-aaf-flanders-varicel-single-header-merv-11-331-953-150","title":"12x24x12 AAF Flanders VariCel Single Header MERV 11 331-953-150 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e12″ × 24″ × 12″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-953-150) delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 11 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 11 captures\u003c\/h3\u003e\n\u003cp\u003eFine dust, pollen, pet dander, mold spores, smoke particles, and smaller allergens. MERV 11 is the standard recommendation for households with allergies, asthma, or pets, and is commonly specified for commercial office spaces where indoor air quality is a priority. Confirm your system can handle the slight increase in static pressure compared to MERV 8.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885747535994,"sku":"331-953-150","price":202.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_dc09c30a-3a0d-47f8-8b9e-22fce9018b02.png?v=1729222523"},{"product_id":"18x24x6-aaf-flanders-varicel-single-header-merv-11-331-953-151","title":"18x24x6 AAF Flanders VariCel Single Header MERV 11 331-953-151 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e18″ × 24″ × 6″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-953-151) delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 11 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 11 captures\u003c\/h3\u003e\n\u003cp\u003eFine dust, pollen, pet dander, mold spores, smoke particles, and smaller allergens. MERV 11 is the standard recommendation for households with allergies, asthma, or pets, and is commonly specified for commercial office spaces where indoor air quality is a priority. Confirm your system can handle the slight increase in static pressure compared to MERV 8.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885747699834,"sku":"331-953-151","price":668.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_a972def3-95e1-4a8c-b8ee-c05155d355dd.png?v=1729222530"},{"product_id":"18x24x12-aaf-flanders-varicel-single-header-merv-11-331-953-152","title":"18x24x12 AAF Flanders VariCel Single Header MERV 11 331-953-152 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e18″ × 24″ × 12″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-953-152) delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 11 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 11 captures\u003c\/h3\u003e\n\u003cp\u003eFine dust, pollen, pet dander, mold spores, smoke particles, and smaller allergens. MERV 11 is the standard recommendation for households with allergies, asthma, or pets, and is commonly specified for commercial office spaces where indoor air quality is a priority. Confirm your system can handle the slight increase in static pressure compared to MERV 8.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885747765370,"sku":"331-953-152","price":249.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_d3d5c089-98fb-4759-9772-012646bb5a7f.png?v=1729222536"},{"product_id":"16x20x6-aaf-flanders-varicel-single-header-merv-11-331-953-155-2-pack","title":"16x20x6 AAF Flanders VariCel Single Header MERV 11 331-953-155 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e16″ × 20″ × 6″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-953-155) delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 11 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 11 captures\u003c\/h3\u003e\n\u003cp\u003eFine dust, pollen, pet dander, mold spores, smoke particles, and smaller allergens. MERV 11 is the standard recommendation for households with allergies, asthma, or pets, and is commonly specified for commercial office spaces where indoor air quality is a priority. Confirm your system can handle the slight increase in static pressure compared to MERV 8.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885747896442,"sku":"331-953-155","price":319.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_a4197c73-3754-4183-9e04-10ddc2d7e060.png?v=1729222540"},{"product_id":"16x20x12-aaf-flanders-varicel-single-header-merv-11-331-953-156","title":"16x20x12 AAF Flanders VariCel Single Header MERV 11 331-953-156 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e16″ × 20″ × 12″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-953-156) delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 11 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 11 captures\u003c\/h3\u003e\n\u003cp\u003eFine dust, pollen, pet dander, mold spores, smoke particles, and smaller allergens. MERV 11 is the standard recommendation for households with allergies, asthma, or pets, and is commonly specified for commercial office spaces where indoor air quality is a priority. Confirm your system can handle the slight increase in static pressure compared to MERV 8.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885747994746,"sku":"331-953-156","price":216.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_f45d989e-9644-49cb-b99a-f0ace54a7ee6.png?v=1729222547"},{"product_id":"20x25x6-aaf-flanders-varicel-single-header-merv-11-331-953-157","title":"20x25x6 AAF Flanders VariCel Single Header MERV 11 331-953-157 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 25″ × 6″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-953-157) delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 11 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 11 captures\u003c\/h3\u003e\n\u003cp\u003eFine dust, pollen, pet dander, mold spores, smoke particles, and smaller allergens. MERV 11 is the standard recommendation for households with allergies, asthma, or pets, and is commonly specified for commercial office spaces where indoor air quality is a priority. Confirm your system can handle the slight increase in static pressure compared to MERV 8.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885748125818,"sku":"331-953-157","price":685.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_46d52b38-420d-4b96-afa2-1792bc4d2f7a.png?v=1729222554"},{"product_id":"16x25x6-aaf-flanders-varicel-single-header-merv-11-331-953-184","title":"16x25x6 AAF Flanders VariCel Single Header MERV 11 331-953-184 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e16″ × 25″ × 6″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-953-184) delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 11 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 11 captures\u003c\/h3\u003e\n\u003cp\u003eFine dust, pollen, pet dander, mold spores, smoke particles, and smaller allergens. MERV 11 is the standard recommendation for households with allergies, asthma, or pets, and is commonly specified for commercial office spaces where indoor air quality is a priority. Confirm your system can handle the slight increase in static pressure compared to MERV 8.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885748224122,"sku":"331-953-184","price":646.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_6ef16579-2683-48c8-9e7d-b31ea7e6ec37.png?v=1759428524"},{"product_id":"16x25x12-aaf-flanders-varicel-single-header-merv-11-331-953-185","title":"16x25x12 AAF Flanders VariCel Single Header MERV 11 331-953-185 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e16″ × 25″ × 12″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-953-185) delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 11 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 11 captures\u003c\/h3\u003e\n\u003cp\u003eFine dust, pollen, pet dander, mold spores, smoke particles, and smaller allergens. MERV 11 is the standard recommendation for households with allergies, asthma, or pets, and is commonly specified for commercial office spaces where indoor air quality is a priority. Confirm your system can handle the slight increase in static pressure compared to MERV 8.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885748355194,"sku":"331-953-185","price":235.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_6ddbe2fa-4986-49ec-a391-592f4ff8d90a.png?v=1759428526"},{"product_id":"20x24x6-aaf-flanders-varicel-single-header-merv-11-331-953-188-2-pack","title":"20x24x6 AAF Flanders VariCel Single Header MERV 11 331-953-188 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 24″ × 6″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-953-188) delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 11 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 11 captures\u003c\/h3\u003e\n\u003cp\u003eFine dust, pollen, pet dander, mold spores, smoke particles, and smaller allergens. MERV 11 is the standard recommendation for households with allergies, asthma, or pets, and is commonly specified for commercial office spaces where indoor air quality is a priority. Confirm your system can handle the slight increase in static pressure compared to MERV 8.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885748453498,"sku":"331-953-188","price":360.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_113c5974-5592-43b1-a31f-b348328ae345.png?v=1729222573"},{"product_id":"20x24x12-aaf-flanders-varicel-single-header-merv-11-331-953-189","title":"20x24x12 AAF Flanders VariCel Single Header MERV 11 331-953-189 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 24″ × 12″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-953-189) delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 11 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 11 captures\u003c\/h3\u003e\n\u003cp\u003eFine dust, pollen, pet dander, mold spores, smoke particles, and smaller allergens. MERV 11 is the standard recommendation for households with allergies, asthma, or pets, and is commonly specified for commercial office spaces where indoor air quality is a priority. Confirm your system can handle the slight increase in static pressure compared to MERV 8.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885748584570,"sku":"331-953-189","price":253.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_65c30cd1-0b55-4b2b-a7b2-c64e9230308b.png?v=1729222580"},{"product_id":"12x20x6-aaf-flanders-varicel-single-header-merv-11-331-953-190-2-pack","title":"12x20x6 AAF Flanders VariCel Single Header MERV 11 331-953-190 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e12″ × 20″ × 6″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-953-190) delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 11 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 11 captures\u003c\/h3\u003e\n\u003cp\u003eFine dust, pollen, pet dander, mold spores, smoke particles, and smaller allergens. MERV 11 is the standard recommendation for households with allergies, asthma, or pets, and is commonly specified for commercial office spaces where indoor air quality is a priority. Confirm your system can handle the slight increase in static pressure compared to MERV 8.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885748715642,"sku":"331-953-190","price":312.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_787ef13e-d536-41a2-9143-ca48063db4f5.png?v=1729222586"},{"product_id":"12x20x12-aaf-flanders-varicel-single-header-merv-11-331-953-191","title":"12x20x12 AAF Flanders VariCel Single Header MERV 11 331-953-191 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e12″ × 20″ × 12″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-953-191) delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 11 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 11 captures\u003c\/h3\u003e\n\u003cp\u003eFine dust, pollen, pet dander, mold spores, smoke particles, and smaller allergens. MERV 11 is the standard recommendation for households with allergies, asthma, or pets, and is commonly specified for commercial office spaces where indoor air quality is a priority. Confirm your system can handle the slight increase in static pressure compared to MERV 8.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885748846714,"sku":"331-953-191","price":205.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_891c5424-119d-4422-9f30-4b09db972ff0.png?v=1729222593"},{"product_id":"18x24x6-aaf-flanders-varicel-single-header-merv-14-331-946-151-2-pack","title":"18x24x6 AAF Flanders VariCel Single Header MERV 14 331-946-151 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e18″ × 24″ × 6″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-946-151) delivers \u003cstrong\u003eMERV 14\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 14 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 14 captures\u003c\/h3\u003e\n\u003cp\u003eSub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885748977786,"sku":"331-946-151","price":364.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_b3afee64-900c-448d-88a4-c13cbb70b116.png?v=1729222599"},{"product_id":"12x20x6-aaf-flanders-varicel-single-header-merv-14-331-946-190-2-pack","title":"12x20x6 AAF Flanders VariCel Single Header MERV 14 331-946-190 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e12″ × 20″ × 6″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-946-190) delivers \u003cstrong\u003eMERV 14\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 14 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 14 captures\u003c\/h3\u003e\n\u003cp\u003eSub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885749076090,"sku":"331-946-190","price":331.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_8e9389bd-9998-4830-9999-743dc5c0955d.png?v=1729222605"},{"product_id":"20x25x12-aaf-flanders-varicel-single-header-merv-14-331-946-158","title":"20x25x12 AAF Flanders VariCel Single Header MERV 14 331-946-158 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 25″ × 12″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-946-158) delivers \u003cstrong\u003eMERV 14\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 14 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 14 captures\u003c\/h3\u003e\n\u003cp\u003eSub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885749207162,"sku":"331-946-158","price":267.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_30adc24c-479a-4869-b0fd-4ed145755a5c.png?v=1729222611"},{"product_id":"20x24x12-aaf-flanders-varicel-single-header-merv-14-331-946-189","title":"20x24x12 AAF Flanders VariCel Single Header MERV 14 331-946-189 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 24″ × 12″\u003c\/strong\u003e \u003cstrong\u003eAAF Flanders VariCel\u003c\/strong\u003e filter (part number 331-946-189) delivers \u003cstrong\u003eMERV 14\u003c\/strong\u003e filtration in a rigid extended-surface construction for commercial and industrial HVAC.\u003c\/p\u003e\n\u003cp\u003eThe classic VariCel uses dual-density media and rigid construction to deliver consistent high-efficiency filtration across variable airflow, turbulent conditions, and high humidity.\u003c\/p\u003e\n\u003ch3\u003eWhen VariCel is specified\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable air volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction holds pleat geometry across the full airflow range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-humidity environments\u003c\/strong\u003e — moisture-resistant frame won't delaminate or warp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurbulent airflow\u003c\/strong\u003e — reinforced construction handles velocity variation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecialized applications\u003c\/strong\u003e — paint-booth diffusion filters, cleanroom pre-filters, cannabis cultivation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Dual-density extended-surface synthetic or microfiberglass (MERV-dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rigid metal and board composite construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single Header\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 14 per ASHRAE 52.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 14 captures\u003c\/h3\u003e\n\u003cp\u003eSub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.\u003c\/p\u003e\n\u003ch3\u003eNeed help with sizing or cross-reference?\u003c\/h3\u003e\n\u003cp\u003eIf you're replacing an existing filter from a different manufacturer or need help matching the spec, \u003ca href=\"\/pages\/contact-us\"\u003esend us your current part number\u003c\/a\u003e and we'll confirm the exact match.\u003c\/p\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/VariCel_Prod_Mark_Bro_AFP_1_158.pdf?v=1660584526%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload VariCel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43885749305466,"sku":"331-946-189","price":286.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/varicel_sh_web_37e164b2-2528-4a82-895b-d11ca62efe9e.png?v=1729222617"}],"url":"https:\/\/www.rememberthefilter.com\/collections\/varicel-high-efficiency-box-filters.oembed?page=4","provider":"RememberTheFilter.com","version":"1.0","type":"link"}