{"title":"25x25x1 Replacement HVAC Filters | Trusted Since 2006","description":"\u003cdiv class=\"rtf-collection-intro\"\u003e\n\n\u003ch2\u003e25x25x1 HVAC, Furnace \u0026amp; AC Filters\u003c\/h2\u003e\n\n\u003cp\u003eReplacement 25x25x1 air filters for homes, offices, and commercial HVAC systems. This collection covers every MERV rating we stock: fiberglass MERV 1–4, pleated MERV 8, MERV 10, MERV 11, and hospital-grade MERV 13. Free shipping on orders over $50.\u003c\/p\u003e\n\n\u003cp\u003eIf your rack is labeled 25x25x1, any filter here will fit. Actual dimensions vary slightly by manufacturer—check the product page for exact specs. Need a non-standard size? Our \u003ca href=\"\/collections\/custom-filters\"\u003ecustom filters\u003c\/a\u003e cut to 1\/8″ precision.\u003c\/p\u003e\n\n\u003ch3\u003eWhich MERV Rating Should I Choose?\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMERV 1–4 (fiberglass)\u003c\/strong\u003e — Lowest cost. Protects your blower and coil from debris but won't improve air quality. Best for rentals and monthly-change schedules.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMERV 8 (pleated)\u003c\/strong\u003e — Residential and light-commercial standard. Captures dust, pollen, lint, and mold spores.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMERV 10–11\u003c\/strong\u003e — Captures pet dander, finer particulate, and some bacteria. Recommended for pets, allergies, and facilities pursuing better IAQ.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMERV 13\u003c\/strong\u003e — Hospital-grade. Captures smoke, bacteria, virus carriers, and most airborne allergens. ASHRAE and CDC recommend MERV 13 where the HVAC system can support it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eNot sure? Take our \u003ca href=\"\/pages\/merv-quiz\"\u003eMERV quiz\u003c\/a\u003e or call \u003cstrong\u003e1-866-469-8556\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eHow Often Should I Change a 25x25x1 Filter?\u003c\/h3\u003e\n\n\u003cp\u003ePlan on every \u003cstrong\u003e60–90 days\u003c\/strong\u003e for a 1″ filter in a typical residential or light-commercial system. Homes with pets, smokers, or allergies may need to replace every 30–60 days. \u003ca href=\"\/collections\/subscription-filters\"\u003eSubscribe \u0026amp; save 10%\u003c\/a\u003e on any filter in this collection.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Buy From RememberTheFilter.com\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrusted brands\u003c\/strong\u003e — AAF Flanders, Koch, and our own PrimeShield line, built by manufacturers we've partnered with for nearly two decades.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter Fit Guarantee\u003c\/strong\u003e — if it doesn't fit as expected, we'll make it right.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree shipping over $50\u003c\/strong\u003e to the lower 48, subscription discounts up to 10%, commercial \u0026amp; bulk pricing available.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e","products":[{"product_id":"25x25x1-ez-flow-ii-filters-10055-012525-12-filters","title":"25x25x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter (12 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e25″ × 25″ × 1″\u003c\/strong\u003e \u003cstrong\u003eFlanders EZ Flow\u003c\/strong\u003e spun-fiberglass panel filter (part number \u003cstrong\u003e10055.012525\u003c\/strong\u003e) ships as a case of \u003cstrong\u003e12 filters\u003c\/strong\u003e and is built for one job: \u003cstrong\u003eprotect your HVAC equipment while maximizing airflow\u003c\/strong\u003e. It's the category-leading fiberglass filter that's been keeping coils, blowers, and heat exchangers free of lint and large debris for decades.\u003c\/p\u003e\n\u003ch3\u003eUnderstanding the MERV 1–4 rating\u003c\/h3\u003e\n\u003cp\u003eFiberglass media is rated \u003cstrong\u003eMERV 1 when clean and builds up to MERV 4\u003c\/strong\u003e as dust loads onto the fibers. That's not inconsistency — it's how spun-glass media works. A fresh filter lets the most air through while still blocking larger debris; as dust collects, the media becomes more efficient at catching finer particles. The goal of a MERV 1–4 filter isn't air quality — it's \u003cstrong\u003eequipment protection with maximum airflow\u003c\/strong\u003e. It keeps lint, hair, and large dust out of your coil and blower, which is exactly what older systems, high-airflow applications, and pre-filter duty need.\u003c\/p\u003e\n\u003ch3\u003eEquipment protection, not air quality\u003c\/h3\u003e\n\u003cp\u003eEZ Flow isn't designed to filter fine dust, allergens, or smoke. It's designed to stop the stuff that damages HVAC equipment — lint, hair, large dust clumps, and insulation fragments — before they hit your coil or blower. For allergen filtration, step up to a pleated MERV 8 or higher. For system protection with maximum airflow (and the lowest filter cost in the category), EZ Flow is the right tool.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Continuous-filament spun fiberglass, bonded with resinous adhesive for rigidity and compression resistance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e One-piece heavy chipboard — no corner seams to separate. Media adhered directly to the frame with hot-melt adhesive, no metal retainer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUL listing:\u003c\/strong\u003e UL 900 listed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eService life:\u003c\/strong\u003e Replace every 30 days under typical use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen EZ Flow is the right choice\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLegacy or older HVAC systems not designed for higher-MERV static pressure\u003c\/li\u003e\n  \u003cli\u003eRental properties where maintenance burden matters more than fine filtration\u003c\/li\u003e\n  \u003cli\u003eWorkshops, garages, and outbuildings with lots of airborne debris\u003c\/li\u003e\n  \u003cli\u003ePre-filter duty in front of a higher-MERV filter\u003c\/li\u003e\n  \u003cli\u003eCommercial applications prioritizing airflow over fine particulate capture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/EZ_Flow_II_AFP-1-392D-3.pdf?v=1753301648%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload EZ Flow 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-1-4-fiberglass-panel-basic-air-filters-12-pack\"\u003ePrimeShield MAX Airflow (MERV 1–4)\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":33437960140,"sku":"10055-012525","price":96.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/image_78defe89-b1a8-4630-9c34-f54a5fa7573e.jpg?v=1769979558"},{"product_id":"25x25x1-pre-pleat-40-lpd-80055-012525-12-filters","title":"25x25x1 AAF Flanders PREpleat LPD MERV 10 Standard Capacity (12 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e25″ × 25″ × 1″ Standard Capacity\u003c\/strong\u003e listing (AAF Flanders part number \u003cstrong\u003e80055.012525\u003c\/strong\u003e) of the \u003cstrong\u003eAAF Flanders PREpleat LPD\u003c\/strong\u003e pleated air filter ships as a case of \u003cstrong\u003e12 filters\u003c\/strong\u003e, and delivers \u003cstrong\u003eMERV 10\u003c\/strong\u003e filtration with the lowest initial resistance of any pleated filter in its class. Result: cleaner air, more runtime between changes, and less energy burned pushing air through a loaded filter.\u003c\/p\u003e\n\u003ch3\u003eWhat Standard Capacity means\u003c\/h3\u003e\n\u003cp\u003eThe SC (Standard Capacity) variant is the everyday workhorse of the PREpleat LPD line: the lowest initial resistance in its class while delivering \u003cstrong\u003eMERV 10\u003c\/strong\u003e filtration. For homes, light commercial spaces, and pre-filter duty in larger systems, SC balances filter cost, airflow, and dust-holding to keep HVAC equipment running efficiently.\u003c\/p\u003e\n\u003ch3\u003eSame filter you've ordered for years — now MERV 10\u003c\/h3\u003e\n\u003cp\u003eThe AAF Flanders PREpleat LPD was a MERV 8 filter for most of its life, and many of our repeat customers knew it by that rating. The part number hasn't changed. The frame, pleat geometry, and installation are the same. What changed is the media — AAF upgraded it to a \u003cstrong\u003eMERV 10\u003c\/strong\u003e gradient-density synthetic with no increase in pressure drop and \u003cstrong\u003eno change in price\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIn practice:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBetter filtration, same airflow.\u003c\/strong\u003e Captures a broader particle range than the old MERV 8 while keeping the low initial resistance LPD is known for.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSame fit, same part number.\u003c\/strong\u003e Drop it into the same housing you've always used.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSame service life.\u003c\/strong\u003e If 3 months was your rhythm, 3 months still works.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSame price point.\u003c\/strong\u003e A real filtration upgrade at no cost.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 10 captures\u003c\/h3\u003e\n\u003cp\u003eFiner household dust, most pollen, mold spores, pet dander, and larger bacteria-sized particles — a practical step up for allergy-sensitive homes, wildfire-smoke regions, and light commercial spaces. Mechanical (not electrostatic) capture means performance doesn't fade as the filter loads.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e 100% synthetic non-woven, recyclable, gradient-density. Mechanical capture — performance does not fade with age the way charged-media filters can.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePleat support:\u003c\/strong\u003e Expanded metal continuously laminated to the air-leaving side to hold pleat shape through the filter's service life.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePleat geometry:\u003c\/strong\u003e V-pleat design maximizes usable surface area and keeps pressure drop low across the loading curve.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Heavy-duty two-piece moisture-resistant board with diagonal support members and interlocking corners. Media bonded to the frame at all contact points.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 180°F (82°C).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003ePrimary filter in residential returns and light commercial HVAC, and pre-filter ahead of higher-MERV media in larger commercial air handlers. Drop-in replacement for front-access holding frames and side-access housings.\u003c\/p\u003e\n\u003ch3\u003eReplacement schedule\u003c\/h3\u003e\n\u003cp\u003eAt 1″ depth, plan to replace this filter \u003cstrong\u003eevery 60–90 days\u003c\/strong\u003e under typical residential or light commercial loading. High-dust environments, pet homes, wildfire smoke events, or construction-adjacent sites will shorten that window. Check the filter monthly through the first cycle to calibrate your schedule.\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\/PREpleat_LPD_M10_SC_AFP-1-380C-2.pdf?v=1725043729%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload PREpleat LPD 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-10-pleated-air-filters-12-pack\"\u003ePrimeShield Enhanced (MERV 10)\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":44087770742906,"sku":"80055-012525","price":130.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/80055_a618c8b9-3921-41c4-bb51-8f78104e7da1.png?v=1730063937"},{"product_id":"flanders-precisionaire-pre-pleat-40-high-capacity-filters-12-pack","title":"AAF Flanders PREpleat LPD MERV 10 High Capacity (12 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003eHigh Capacity\u003c\/strong\u003e listing of the \u003cstrong\u003eAAF Flanders PREpleat LPD\u003c\/strong\u003e pleated air filter ships as a case of \u003cstrong\u003e12 filters\u003c\/strong\u003e, and delivers \u003cstrong\u003eMERV 10\u003c\/strong\u003e filtration with the lowest initial resistance of any pleated filter in its class. Result: cleaner air, more runtime between changes, and less energy burned pushing air through a loaded filter.\u003c\/p\u003e\n\u003ch3\u003eWhat makes the HC (High Capacity) different?\u003c\/h3\u003e\n\u003cp\u003eThe High Capacity variant uses a denser pleat pattern than the Standard Capacity filter, giving it more media surface area in the same footprint. More surface area means more dust can load before reaching end-of-life pressure drop — so HC filters last longer in dusty environments, light commercial settings, and pre-filter applications where replacement frequency is a cost driver.\u003c\/p\u003e\n\u003ch3\u003eSame filter you've ordered for years — now MERV 10\u003c\/h3\u003e\n\u003cp\u003eThe AAF Flanders PREpleat LPD was a MERV 8 filter for most of its life, and many of our repeat customers knew it by that rating. The part number hasn't changed. The frame, pleat geometry, and installation are the same. What changed is the media — AAF upgraded it to a \u003cstrong\u003eMERV 10\u003c\/strong\u003e gradient-density synthetic with no increase in pressure drop and \u003cstrong\u003eno change in price\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIn practice:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBetter filtration, same airflow.\u003c\/strong\u003e Captures a broader particle range than the old MERV 8 while keeping the low initial resistance LPD is known for.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSame fit, same part number.\u003c\/strong\u003e Drop it into the same housing you've always used.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSame service life.\u003c\/strong\u003e If 3 months was your rhythm, 3 months still works.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSame price point.\u003c\/strong\u003e A real filtration upgrade at no cost.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 10 captures\u003c\/h3\u003e\n\u003cp\u003eFiner household dust, most pollen, mold spores, pet dander, and larger bacteria-sized particles — a practical step up for allergy-sensitive homes, wildfire-smoke regions, and light commercial spaces. Mechanical (not electrostatic) capture means performance doesn't fade as the filter loads.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e 100% synthetic non-woven, recyclable, gradient-density. Mechanical capture — performance does not fade with age the way charged-media filters can.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePleat support:\u003c\/strong\u003e Expanded metal continuously laminated to the air-leaving side to hold pleat shape through the filter's service life.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePleat geometry:\u003c\/strong\u003e V-pleat design maximizes usable surface area and keeps pressure drop low across the loading curve.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Heavy-duty two-piece moisture-resistant board with diagonal support members and interlocking corners. Media bonded to the frame at all contact points.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 180°F (82°C).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003ePrimary filter in residential returns and light commercial HVAC, and pre-filter ahead of higher-MERV media in larger commercial air handlers. Drop-in replacement for front-access holding frames and side-access housings.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-10-pleated-air-filters-12-pack\"\u003ePrimeShield Enhanced (MERV 10)\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 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AAF Flanders PREpleat LPD MERV 10 High Capacity (12 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e25″ × 25″ × 1″ High Capacity\u003c\/strong\u003e listing (AAF Flanders part number \u003cstrong\u003e80255.012525\u003c\/strong\u003e) of the \u003cstrong\u003eAAF Flanders PREpleat LPD\u003c\/strong\u003e pleated air filter ships as a case of \u003cstrong\u003e12 filters\u003c\/strong\u003e, and delivers \u003cstrong\u003eMERV 10\u003c\/strong\u003e filtration with the lowest initial resistance of any pleated filter in its class. Result: cleaner air, more runtime between changes, and less energy burned pushing air through a loaded filter.\u003c\/p\u003e\n\u003ch3\u003eWhat makes the HC (High Capacity) different?\u003c\/h3\u003e\n\u003cp\u003eThe High Capacity variant uses a denser pleat pattern than the Standard Capacity filter, giving it more media surface area in the same footprint. More surface area means more dust can load before reaching end-of-life pressure drop — so HC filters last longer in dusty environments, light commercial settings, and pre-filter applications where replacement frequency is a cost driver.\u003c\/p\u003e\n\u003ch3\u003eSame filter you've ordered for years — now MERV 10\u003c\/h3\u003e\n\u003cp\u003eThe AAF Flanders PREpleat LPD was a MERV 8 filter for most of its life, and many of our repeat customers knew it by that rating. The part number hasn't changed. The frame, pleat geometry, and installation are the same. What changed is the media — AAF upgraded it to a \u003cstrong\u003eMERV 10\u003c\/strong\u003e gradient-density synthetic with no increase in pressure drop and \u003cstrong\u003eno change in price\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIn practice:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBetter filtration, same airflow.\u003c\/strong\u003e Captures a broader particle range than the old MERV 8 while keeping the low initial resistance LPD is known for.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSame fit, same part number.\u003c\/strong\u003e Drop it into the same housing you've always used.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSame service life.\u003c\/strong\u003e If 3 months was your rhythm, 3 months still works.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSame price point.\u003c\/strong\u003e A real filtration upgrade at no cost.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 10 captures\u003c\/h3\u003e\n\u003cp\u003eFiner household dust, most pollen, mold spores, pet dander, and larger bacteria-sized particles — a practical step up for allergy-sensitive homes, wildfire-smoke regions, and light commercial spaces. Mechanical (not electrostatic) capture means performance doesn't fade as the filter loads.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e 100% synthetic non-woven, recyclable, gradient-density. Mechanical capture — performance does not fade with age the way charged-media filters can.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePleat support:\u003c\/strong\u003e Expanded metal continuously laminated to the air-leaving side to hold pleat shape through the filter's service life.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePleat geometry:\u003c\/strong\u003e V-pleat design maximizes usable surface area and keeps pressure drop low across the loading curve.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Heavy-duty two-piece moisture-resistant board with diagonal support members and interlocking corners. Media bonded to the frame at all contact points.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 180°F (82°C).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003ePrimary filter in residential returns and light commercial HVAC, and pre-filter ahead of higher-MERV media in larger commercial air handlers. Drop-in replacement for front-access holding frames and side-access housings.\u003c\/p\u003e\n\u003ch3\u003eReplacement schedule\u003c\/h3\u003e\n\u003cp\u003eAt 1″ depth, plan to replace this filter \u003cstrong\u003eevery 60–90 days\u003c\/strong\u003e under typical residential or light commercial loading. High-dust environments, pet homes, wildfire smoke events, or construction-adjacent sites will shorten that window. Check the filter monthly through the first cycle to calibrate your schedule.\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\/PrePleat_LPD_M10_HC_AFP-1-379C.pdf?v=1725053079%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload PREpleat LPD 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-10-pleated-air-filters-12-pack\"\u003ePrimeShield Enhanced (MERV 10)\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":44087770579066,"sku":"80255-012525","price":138.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/80255_fd13ffd3-666b-4ac4-98e1-016e813f1545.png?v=1730063806"},{"product_id":"flanders-precisionaire-activated-carbon-filters-12-pack","title":"AAF Flanders PREpleat Activated Carbon Odor Control (12 Filters)","description":"\u003cp\u003eThe of the \u003cstrong\u003eAAF Flanders PREpleat Activated Carbon Odor Control\u003c\/strong\u003e filter ships as a case of \u003cstrong\u003e12 filters\u003c\/strong\u003e and combines a pleated filter with an activated-carbon layer. The carbon adsorbs odor-causing gases, volatile organic compounds (VOCs), cooking smells, pet odors, and light smoke — while the pleated media captures dust and particulates at a MERV 8 efficiency rating.\u003c\/p\u003e\n\u003ch3\u003eWhen to choose an odor-control filter\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCooking odors lingering through the return-air system\u003c\/li\u003e\n  \u003cli\u003ePet odors in multi-pet households\u003c\/li\u003e\n  \u003cli\u003eSmoke infiltration (wildfire, neighboring properties, light tobacco)\u003c\/li\u003e\n  \u003cli\u003eVOC concerns after painting, new carpet, or cleaning products\u003c\/li\u003e\n  \u003cli\u003eRestaurants, spas, gyms, pet facilities, cannabis operations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow activated carbon filtration works\u003c\/h3\u003e\n\u003cp\u003eActivated carbon is microporous — a single gram has a surface area roughly equivalent to a football field. Odor molecules physically adhere to that surface (adsorption). Unlike particulate capture, carbon saturates over time, so these filters should be replaced on the same 1–3 month schedule as the pleated media itself, or sooner if odor performance degrades.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCarbon media:\u003c\/strong\u003e Pleated activated-carbon-impregnated media, bonded to a standard pleated filter substrate.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Moisture-resistant beverage-board with expanded-metal media support.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParticulate rating:\u003c\/strong\u003e MERV 8 while new; efficiency increases with dust loading.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 180°F (82°C).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-8-pleated-air-filters-12-pack\"\u003ePrimeShield Essential (MERV 8)\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 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The carbon adsorbs odor-causing gases, volatile organic compounds (VOCs), cooking smells, pet odors, and light smoke — while the pleated media captures dust and particulates at a MERV 8 efficiency rating.\u003c\/p\u003e\n\u003ch3\u003eWhen to choose an odor-control filter\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCooking odors lingering through the return-air system\u003c\/li\u003e\n  \u003cli\u003ePet odors in multi-pet households\u003c\/li\u003e\n  \u003cli\u003eSmoke infiltration (wildfire, neighboring properties, light tobacco)\u003c\/li\u003e\n  \u003cli\u003eVOC concerns after painting, new carpet, or cleaning products\u003c\/li\u003e\n  \u003cli\u003eRestaurants, spas, gyms, pet facilities, cannabis operations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow activated carbon filtration works\u003c\/h3\u003e\n\u003cp\u003eActivated carbon is microporous — a single gram has a surface area roughly equivalent to a football field. Odor molecules physically adhere to that surface (adsorption). Unlike particulate capture, carbon saturates over time, so these filters should be replaced on the same 1–3 month schedule as the pleated media itself, or sooner if odor performance degrades.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCarbon media:\u003c\/strong\u003e Pleated activated-carbon-impregnated media, bonded to a standard pleated filter substrate.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Moisture-resistant beverage-board with expanded-metal media support.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParticulate rating:\u003c\/strong\u003e MERV 8 while new; efficiency increases with dust loading.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 180°F (82°C).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReplacement schedule\u003c\/h3\u003e\n\u003cp\u003eAt 1″ depth, plan to replace this filter \u003cstrong\u003eevery 60–90 days\u003c\/strong\u003e under typical residential or light commercial loading. High-dust environments, pet homes, wildfire smoke events, or construction-adjacent sites will shorten that window. Check the filter monthly through the first cycle to calibrate your schedule.\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\/PREpleat_AC_GPF-1-143.pdf?v=1724342481%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload PREpleat Carbon 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-8-pleated-air-filters-12-pack\"\u003ePrimeShield Essential (MERV 8)\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":44087770349690,"sku":"81255-012525","price":263.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/PrePleat_AC_web_b9279406-68b4-4558-9404-5ae1d0a2ea0e.png?v=1724345138"},{"product_id":"pre-pleat-hv-12-filters-85455-012525","title":"25x25x1 AAF Flanders PrePleat HV (High Velocity) MERV 8 (12 Filters)","description":"\u003cp\u003eThe \u003cstrong\u003eAAF Flanders PrePleat HV (High Velocity)\u003c\/strong\u003e pleated air filter delivers \u003cstrong\u003eMERV 8\u003c\/strong\u003e filtration and ships as a case of \u003cstrong\u003e12 filters\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eMERV 8 — standard efficiency\u003c\/h3\u003e\n\u003cp\u003eMERV 8 is the baseline for good residential and light commercial filtration: effective against household dust, lint, larger pollens, and dust-mite debris — with low pressure drop so it protects airflow and coil performance. It's the right choice when system protection and clean returns are the goal, not allergen-level filtration.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e High-velocity-rated pleated media engineered for sustained air velocities above standard HVAC (up to 625 FPM).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Reinforced frame with heavy-gauge media support for high-velocity applications. Stands up to vibration and turbulence.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 200°F (93°C)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eGas-turbine inlet air, high-velocity commercial air handlers, and industrial applications where face velocity exceeds standard HVAC ranges.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-8-pleated-air-filters-12-pack\"\u003ePrimeShield Essential (MERV 8)\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","offer_id":33444104524,"sku":"85455-012525","price":192.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/products\/flanders-aaf-pleated-filter-pre-pleat-hv-12-filters-85455-012525-21901051660.gif?v=1496907989"},{"product_id":"flanders-pleated-merv-11-air-filters-12-pack","title":"AAF Flanders PREpleat M11 MERV 11 Standard Capacity (12 Filters)","description":"\u003cp\u003eThe \u003cstrong\u003eAAF Flanders PREpleat M11\u003c\/strong\u003e pleated air filter delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration in the \u003cstrong\u003eStandard Capacity\u003c\/strong\u003e configuration and ships as a case of \u003cstrong\u003e12 filters\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe PREpleat M11 is a meaningful efficiency upgrade over standard MERV 8 filters — capturing roughly 60–65% of particles in the 1–3 micron range versus the 20–30% typical of MERV 8 — at roughly the same airflow resistance.\u003c\/p\u003e\n\u003ch3\u003eWhat Standard Capacity means\u003c\/h3\u003e\n\u003cp\u003eThe SC (Standard Capacity) configuration is the everyday workhorse of the PREpleat M11 line: MERV 11 filtration with lower initial resistance than the High Capacity variant. For most homes and light commercial spaces, SC balances filter cost, airflow, and dust-holding capacity.\u003c\/p\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\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Progressive-density bi-component synthetic fibers. Mechanical capture — performance does not fade as the filter ages.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Moisture-resistant beverage-board with diagonal support members and diamond-shaped expanded-metal media support bonded to the downstream side.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 180°F (82°C)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eCommercial and residential HVAC where MERV 11 filtration is specified. Drop-in replacement for front-access holding frames and side-access housings.\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":"10x10x1","offer_id":36429186188,"sku":"85655 M11-011010","price":138.99,"currency_code":"USD","in_stock":true},{"title":"10x20x1","offer_id":36429186252,"sku":"85655 M11-011020","price":142.99,"currency_code":"USD","in_stock":true},{"title":"12x20x1","offer_id":36429186380,"sku":"85655 M11-011220","price":123.99,"currency_code":"USD","in_stock":true},{"title":"12x24x1","offer_id":36429186444,"sku":"85655 M11-011224","price":123.99,"currency_code":"USD","in_stock":true},{"title":"14x20x1","offer_id":36429186572,"sku":"85655 M11-011420","price":139.99,"currency_code":"USD","in_stock":true},{"title":"14x25x1","offer_id":36429186636,"sku":"85655 M11-011425","price":146.99,"currency_code":"USD","in_stock":true},{"title":"15x20x1","offer_id":36429186700,"sku":"85655 M11-011520","price":123.99,"currency_code":"USD","in_stock":true},{"title":"16x20x1","offer_id":36429186764,"sku":"85655 M11-011620","price":145.99,"currency_code":"USD","in_stock":true},{"title":"16x25x1","offer_id":36429186828,"sku":"85655 M11-011625","price":146.99,"currency_code":"USD","in_stock":true},{"title":"18x24x1","offer_id":36429186892,"sku":"85655 M11-011824","price":160.99,"currency_code":"USD","in_stock":true},{"title":"18x25x1","offer_id":36429186956,"sku":"85655 M11-011825","price":152.99,"currency_code":"USD","in_stock":true},{"title":"20x20x1","offer_id":36429187020,"sku":"85655 M11-012020","price":146.99,"currency_code":"USD","in_stock":true},{"title":"20x24x1","offer_id":36429187084,"sku":"85655 M11-012024","price":154.99,"currency_code":"USD","in_stock":true},{"title":"20x25x1","offer_id":36429187148,"sku":"85655 M11-012025","price":147.99,"currency_code":"USD","in_stock":true},{"title":"20x30x1","offer_id":36429187212,"sku":"85655 M11-012030","price":154.99,"currency_code":"USD","in_stock":true},{"title":"24x24x1","offer_id":36429187276,"sku":"85655 M11-012424","price":151.99,"currency_code":"USD","in_stock":true},{"title":"25x25x1","offer_id":36429187340,"sku":"85655 M11-012525","price":148.99,"currency_code":"USD","in_stock":true},{"title":"10x20x2","offer_id":36429187404,"sku":"85655 M11-021020","price":223.99,"currency_code":"USD","in_stock":true},{"title":"12x20x2","offer_id":36429187468,"sku":"85655 M11-021220","price":264.99,"currency_code":"USD","in_stock":true},{"title":"12x24x2","offer_id":36429187532,"sku":"85655 M11-021224","price":227.99,"currency_code":"USD","in_stock":true},{"title":"14x20x2","offer_id":36429187596,"sku":"85655 M11-021420","price":252.99,"currency_code":"USD","in_stock":true},{"title":"14x25x2","offer_id":36429187660,"sku":"85655 M11-021425","price":252.99,"currency_code":"USD","in_stock":true},{"title":"15x20x2","offer_id":36429187724,"sku":"85655 M11-021520","price":227.99,"currency_code":"USD","in_stock":true},{"title":"16x20x2","offer_id":36429187788,"sku":"85655 M11-021620","price":252.99,"currency_code":"USD","in_stock":true},{"title":"16x24x2","offer_id":36429187852,"sku":"85655 M11-021624","price":259.99,"currency_code":"USD","in_stock":true},{"title":"16x25x2","offer_id":36429187916,"sku":"85655 M11-021625","price":252.99,"currency_code":"USD","in_stock":true},{"title":"18x24x2","offer_id":36429187980,"sku":"85655 M11-021824","price":254.99,"currency_code":"USD","in_stock":true},{"title":"18x25x2","offer_id":36429188044,"sku":"85655 M11-021825","price":254.99,"currency_code":"USD","in_stock":true},{"title":"20x20x2","offer_id":36429188108,"sku":"85655 M11-022020","price":253.99,"currency_code":"USD","in_stock":true},{"title":"20x24x2","offer_id":36429188172,"sku":"85655 M11-022024","price":253.99,"currency_code":"USD","in_stock":true},{"title":"20x25x2","offer_id":36429188236,"sku":"85655 M11-022025","price":254.99,"currency_code":"USD","in_stock":true},{"title":"24x24x2","offer_id":36429188300,"sku":"85655 M11-022424","price":254.99,"currency_code":"USD","in_stock":true},{"title":"25x25x2","offer_id":36429188364,"sku":"85655 M11-022525","price":284.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/4806253_A.eps_High.jpg?v=1772057739"},{"product_id":"pre-pleat-62r-merv-11-12-filters-85655-012525m11","title":"25x25x1 AAF Flanders PREpleat M11 MERV 11 Standard Capacity (12 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e25″ × 25″ × 1″\u003c\/strong\u003e listing (part number \u003cstrong\u003e85655-012525M11\u003c\/strong\u003e) of the \u003cstrong\u003eAAF Flanders PREpleat M11\u003c\/strong\u003e pleated air filter delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration in the \u003cstrong\u003eStandard Capacity\u003c\/strong\u003e configuration and ships as a case of \u003cstrong\u003e12 filters\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe PREpleat M11 is a meaningful efficiency upgrade over standard MERV 8 filters — capturing roughly 60–65% of particles in the 1–3 micron range versus the 20–30% typical of MERV 8 — at roughly the same airflow resistance.\u003c\/p\u003e\n\u003ch3\u003eWhat Standard Capacity means\u003c\/h3\u003e\n\u003cp\u003eThe SC (Standard Capacity) configuration is the everyday workhorse of the PREpleat M11 line: MERV 11 filtration with lower initial resistance than the High Capacity variant. For most homes and light commercial spaces, SC balances filter cost, airflow, and dust-holding capacity.\u003c\/p\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\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Progressive-density bi-component synthetic fibers. Mechanical capture — performance does not fade as the filter ages.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Moisture-resistant beverage-board with diagonal support members and diamond-shaped expanded-metal media support bonded to the downstream side.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 180°F (82°C)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eCommercial and residential HVAC where MERV 11 filtration is specified. Drop-in replacement for front-access holding frames and side-access housings.\u003c\/p\u003e\n\u003ch3\u003eReplacement schedule\u003c\/h3\u003e\n\u003cp\u003eAt 1″ depth, plan to replace this filter \u003cstrong\u003eevery 60–90 days\u003c\/strong\u003e under typical residential or light commercial loading. High-dust environments, pet homes, wildfire smoke events, or construction-adjacent sites will shorten that window. Check the filter monthly through the first cycle to calibrate your schedule.\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\/PrePleat_M11_SC.pdf?v=1639547315%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload PREpleat M11 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":44087770972282,"sku":"85655-012525M11","price":148.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/85655_cac85c4b-6aef-4ef4-8ecc-88c08faec516.png?v=1730068676"},{"product_id":"pre-pleat-62r-merv-11-12-filters-85755-012525m11","title":"25x25x1 AAF Flanders PREpleat M11 MERV 11 High Capacity (12 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e25″ × 25″ × 1″\u003c\/strong\u003e listing (part number \u003cstrong\u003e85755-012525M11\u003c\/strong\u003e) of the \u003cstrong\u003eAAF Flanders PREpleat M11\u003c\/strong\u003e pleated air filter delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration in the \u003cstrong\u003eHigh Capacity\u003c\/strong\u003e configuration and ships as a case of \u003cstrong\u003e12 filters\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe PREpleat M11 is a meaningful efficiency upgrade over standard MERV 8 filters — capturing roughly 60–65% of particles in the 1–3 micron range versus the 20–30% typical of MERV 8 — at roughly the same airflow resistance.\u003c\/p\u003e\n\u003ch3\u003eWhat makes the HC (High Capacity) different?\u003c\/h3\u003e\n\u003cp\u003eThe High Capacity variant uses a denser pleat pattern, giving it more media surface area in the same footprint. More surface area means more dust can load before reaching end-of-life pressure drop — so HC filters last longer in dusty environments, light commercial settings, and pre-filter applications where replacement frequency is a cost driver.\u003c\/p\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\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Progressive-density bi-component synthetic fibers. Mechanical capture — performance does not fade as the filter ages.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Moisture-resistant beverage-board with diagonal support members and diamond-shaped expanded-metal media support bonded to the downstream side.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 180°F (82°C)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eCommercial and residential HVAC where MERV 11 filtration is specified. Drop-in replacement for front-access holding frames and side-access housings.\u003c\/p\u003e\n\u003ch3\u003eReplacement schedule\u003c\/h3\u003e\n\u003cp\u003eAt 1″ depth, plan to replace this filter \u003cstrong\u003eevery 60–90 days\u003c\/strong\u003e under typical residential or light commercial loading. High-dust environments, pet homes, wildfire smoke events, or construction-adjacent sites will shorten that window. Check the filter monthly through the first cycle to calibrate your schedule.\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\/PrePleat_M11_HC_AFP-1-388B.pdf?v=1720461763%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload PREpleat M11 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":44087770775674,"sku":"85755-012525M11","price":210.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/85755_54e867ea-31ce-48ce-af23-817e9f0c12cb.png?v=1759359179"},{"product_id":"flanders-pleated-merv-13-air-filters-12-pack","title":"AAF Flanders PREpleat M13 MERV 13 (12 Filters)","description":"\u003cp\u003eThe \u003cstrong\u003eAAF Flanders PREpleat M13\u003c\/strong\u003e pleated air filter delivers \u003cstrong\u003eMERV 13\u003c\/strong\u003e filtration and ships as a case of \u003cstrong\u003e12 filters\u003c\/strong\u003e.\u003c\/p\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\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Progressive-density bi-component synthetic fibers. Mechanical capture — performance does not fade as the filter ages.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Moisture-resistant beverage-board with diagonal support members and expanded-metal media support bonded to the downstream side.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 180°F (82°C)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eCommercial office, light institutional, and residential HVAC where MERV 13 is specified — including facilities responding to wildfire smoke or higher indoor-air-quality requirements. Confirm the HVAC system is rated for the increased static pressure.\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":"10x20x1","offer_id":36429168012,"sku":"90013-011020","price":195.99,"currency_code":"USD","in_stock":true},{"title":"12x20x1","offer_id":36429168076,"sku":"90013-011220","price":200.99,"currency_code":"USD","in_stock":true},{"title":"12x24x1","offer_id":36429168140,"sku":"90013-011224","price":196.99,"currency_code":"USD","in_stock":true},{"title":"14x20x1","offer_id":36429168268,"sku":"90013-011420","price":195.99,"currency_code":"USD","in_stock":true},{"title":"14x25x1","offer_id":36429168332,"sku":"90013-011425","price":196.99,"currency_code":"USD","in_stock":true},{"title":"15x20x1","offer_id":36429168396,"sku":"90013-011520","price":205.99,"currency_code":"USD","in_stock":true},{"title":"16x20x1","offer_id":36429168460,"sku":"90013-011620","price":196.99,"currency_code":"USD","in_stock":true},{"title":"16x24x1","offer_id":36429168524,"sku":"90013-011624","price":200.99,"currency_code":"USD","in_stock":true},{"title":"16x25x1","offer_id":36429168588,"sku":"90013-011625","price":196.99,"currency_code":"USD","in_stock":true},{"title":"18x20x1","offer_id":36429168652,"sku":"90013-011820","price":234.99,"currency_code":"USD","in_stock":true},{"title":"18x24x1","offer_id":36429168716,"sku":"90013-011824","price":197.99,"currency_code":"USD","in_stock":true},{"title":"18x25x1","offer_id":36429168780,"sku":"90013-011825","price":196.99,"currency_code":"USD","in_stock":true},{"title":"20x20x1","offer_id":36429168844,"sku":"90013-012020","price":197.99,"currency_code":"USD","in_stock":true},{"title":"20x24x1","offer_id":36429168908,"sku":"90013-012024","price":198.99,"currency_code":"USD","in_stock":true},{"title":"20x25x1","offer_id":36429169036,"sku":"90013-012025","price":198.99,"currency_code":"USD","in_stock":true},{"title":"24x24x1","offer_id":36429169164,"sku":"90013-012424","price":218.99,"currency_code":"USD","in_stock":true},{"title":"25x25x1","offer_id":36429169292,"sku":"90013-012525","price":258.99,"currency_code":"USD","in_stock":true},{"title":"10x20x2","offer_id":39750293323898,"sku":null,"price":199.99,"currency_code":"USD","in_stock":true},{"title":"12x20x2","offer_id":36429169420,"sku":"90013-021220","price":285.99,"currency_code":"USD","in_stock":true},{"title":"12x24x2","offer_id":36429169548,"sku":"90013-021224","price":301.99,"currency_code":"USD","in_stock":true},{"title":"14x20x2","offer_id":36429169740,"sku":"90013-021420","price":302.99,"currency_code":"USD","in_stock":true},{"title":"14x25x2","offer_id":36429169868,"sku":"90013-021425","price":305.99,"currency_code":"USD","in_stock":true},{"title":"15x20x2","offer_id":36429169996,"sku":"90013-021520","price":305.99,"currency_code":"USD","in_stock":true},{"title":"16x20x2","offer_id":36429170124,"sku":"90013-021620","price":306.99,"currency_code":"USD","in_stock":true},{"title":"16x24x2","offer_id":36429170252,"sku":"90013-021624","price":317.99,"currency_code":"USD","in_stock":true},{"title":"16x25x2","offer_id":36429170380,"sku":"90013-021625","price":308.99,"currency_code":"USD","in_stock":true},{"title":"18x20x2","offer_id":36429170508,"sku":"90013-021820","price":309.99,"currency_code":"USD","in_stock":true},{"title":"18x24x2","offer_id":36429170636,"sku":"90013-021824","price":313.99,"currency_code":"USD","in_stock":true},{"title":"18x25x2","offer_id":36429170700,"sku":"90013-021825","price":350.99,"currency_code":"USD","in_stock":true},{"title":"20x20x2","offer_id":36429170828,"sku":"90013-022020","price":320.99,"currency_code":"USD","in_stock":true},{"title":"20x24x2","offer_id":36429170956,"sku":"90013-022024","price":371.99,"currency_code":"USD","in_stock":true},{"title":"20x25x2","offer_id":36429171084,"sku":"90013-022025","price":372.99,"currency_code":"USD","in_stock":true},{"title":"24x24x2","offer_id":36429171212,"sku":"90013-022424","price":375.99,"currency_code":"USD","in_stock":true},{"title":"25x25x2","offer_id":36429171340,"sku":"90013-022525","price":427.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/4806212_A.eps_High.jpg?v=1772057773"},{"product_id":"25x25x1-naturalaire-microparticle-merv-10-filters-6-pack","title":"25x25x1 NaturalAire Microparticle MERV 10 (6 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e25″ × 25″ × 1″\u003c\/strong\u003e listing (part number \u003cstrong\u003e85256.012525\u003c\/strong\u003e) of the \u003cstrong\u003eNaturalAire Microparticle\u003c\/strong\u003e pleated air filter delivers \u003cstrong\u003eMERV 10\u003c\/strong\u003e filtration and ships as a case of \u003cstrong\u003e6 filters\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIndividually sealed.\u003c\/strong\u003e Every NaturalAire filter ships individually wrapped inside the case — each filter protected from dust, moisture, and shipping damage until you're ready to install it. A real quality difference from bulk-packed competitors, and it matters especially for customers reordering a case at a time.\u003c\/p\u003e\n\u003ch3\u003eWhat MERV 10 captures\u003c\/h3\u003e\n\u003cp\u003eFiner household dust, most pollen, mold spores, pet dander, and larger bacteria-sized particles — a practical step up for allergy-sensitive homes, wildfire-smoke regions, and light commercial spaces. Mechanical (not electrostatic) capture means performance doesn't fade as the filter loads.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Microparticle pleated synthetic media with enhanced surface area. Mechanical capture — performance doesn't fade with age.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Clay-coated recyclable moisture-resistant beverage-board with wire-mesh media support.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 180°F (82°C)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eResidential and light commercial HVAC where MERV 10 filtration is wanted for allergy sensitivity, pet dander, mold spores, or finer dust capture — without the pressure drop of MERV 13.\u003c\/p\u003e\n\u003ch3\u003eReplacement schedule\u003c\/h3\u003e\n\u003cp\u003eAt 1″ depth, plan to replace this filter \u003cstrong\u003eevery 60–90 days\u003c\/strong\u003e under typical residential or light commercial loading. High-dust environments, pet homes, wildfire smoke events, or construction-adjacent sites will shorten that window. Check the filter monthly through the first cycle to calibrate your schedule.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-10-pleated-air-filters-12-pack\"\u003ePrimeShield Enhanced (MERV 10)\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":44087770546298,"sku":"85256-012525","price":130.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/85256_6pack_1bdc3bf3-1ac6-4768-b33b-15f009cfe4a1.jpg?v=1720569078"},{"product_id":"25x25x1-exact-pleated-merv-8-filters-12-pack","title":"25x25x1 Exact Filters Pleated MERV 8 (12 pack)","description":"\u003cp\u003eDesigned for homeowners and facilities managers dealing with an unusual 25 x 25 x 1″ filter housing, this Exact Filters® filter is produced on-demand to fit your opening precisely.\u003c\/p\u003e\n\n\u003cp\u003eFilter bypass — air slipping past a loose frame instead of through the pleats — is one of the most common reasons a filter underperforms its MERV rating in the real world. A precise fit closes that gap.\u003c\/p\u003e\n\n\u003cp\u003eThis MERV 8 pleated filter is built for sites that want better capture than economy fiberglass without pushing the blower to work harder than necessary. It handles the airborne particles most occupants actually notice — dust, pollen, pet dander — while keeping static pressure in a range every standard system can tolerate.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eNominal size: 25 x 25 x 1″\u003c\/li\u003e\n  \u003cli\u003eActual dimensions: 25 x 25 x 3\/4″\u003c\/li\u003e\n  \u003cli\u003eEfficiency rating: MERV 8\u003c\/li\u003e\n  \u003cli\u003eQuantity: 12 filters per carton\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis 25 x 25 x 1″ filter size is frequently ordered by homeowners with older systems, property managers handling mixed-vintage HVAC equipment, and facilities maintenance teams servicing buildings where no two return grilles seem to measure the same.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOrientation arrow printed on the frame to ensure correct airflow direction at install\u003c\/li\u003e\n  \u003cli\u003eSold as a 12-pack so you have a full year of replacements on hand\u003c\/li\u003e\n  \u003cli\u003eReplace approximately every 90 days in standard installations; shorter intervals in high-dust, smoky, or heavy-use environments\u003c\/li\u003e\n  \u003cli\u003eMade to your exact 25 x 25 x 1″ specification — no trimming or taping required at installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:15px;font-weight:bold;color:#1E2D7D;margin:0 0 12px 0;\"\u003eSame 25 x 25 x 1″ size, different efficiency rating\u003c\/p\u003e\u003ctable width=\"100%\" cellpadding=\"0\" cellspacing=\"8\" style=\"border-collapse:separate;margin:18px 0 0 0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/25x25x1-exact-ez-flow-basic-merv-4-filters-12-pack\" style=\"display:block;background-color:#000000;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 25 x 25 x 1″ filter in MERV 1-4\" title=\"See the 25 x 25 x 1″ filter in MERV 1-4\"\u003eMERV 1-4\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eBasic dust-stop\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/25x25x1-exact-pleated-merv-11-filters-12-pack\" style=\"display:block;background-color:#6B3FA0;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 25 x 25 x 1″ filter in MERV 11\" title=\"See the 25 x 25 x 1″ filter in MERV 11\"\u003eMERV 11\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eEnhanced efficiency\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/25x25x1-exact-pleated-merv-13-filters-12-pack\" style=\"display:block;background-color:#C8102E;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 25 x 25 x 1″ filter in MERV 13\" title=\"See the 25 x 25 x 1″ filter in MERV 13\"\u003eMERV 13\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eHighest efficiency\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ctable width=\"100%\" cellpadding=\"0\" cellspacing=\"0\" border=\"0\" style=\"border-collapse:separate;margin:24px 0 0 0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd style=\"background-color:#1E2D7D;border-radius:8px;padding:22px 24px;vertical-align:top;\"\u003e\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:18px;font-weight:bold;color:#ffffff;margin:0 0 8px 0;line-height:1.3;\"\u003eNeed 25 x 25 x 2″ or another depth?\u003c\/p\u003e\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:14px;color:#ffffff;margin:0 0 16px 0;line-height:1.55;opacity:0.95;\"\u003eThis size is available in other depths we don't stock online — reach out and our team will quote it for you, typically same business day.\u003c\/p\u003e\n\u003ctable cellpadding=\"0\" cellspacing=\"10\" border=\"0\" style=\"border-collapse:separate;margin:0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"padding:0;vertical-align:top;\"\u003e\u003ca href=\"tel:+18664698556\" style=\"display:block;background-color:#007B6B;color:#ffffff;text-decoration:none;padding:14px 22px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:16px;line-height:1.2;text-align:center;box-sizing:border-box;white-space:nowrap;\"\u003eCall 866-469-8556\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:0;vertical-align:top;\"\u003e\u003ca href=\"\/pages\/contact-us\" style=\"display:block;background-color:#ffffff;color:#1E2D7D;text-decoration:none;padding:14px 22px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:16px;line-height:1.2;text-align:center;box-sizing:border-box;white-space:nowrap;\"\u003eContact us for a quote\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Exact Filters","offers":[{"title":"Default Title","offer_id":44086997975162,"sku":"80055-01699 25 x 25 x 1 E","price":241.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/ExactM8_dad42309-2361-4184-bd77-9423de1dbebe.jpg?v=1749228399"},{"product_id":"25x25x1-exact-ez-flow-basic-merv-4-filters-12-pack","title":"25x25x1 Exact Filters Fiberglass MERV 1-4 (12 pack)","description":"\u003cp\u003eWhen your HVAC system calls for a 25 x 25 x 1″ filter and the standard aisle doesn't carry it, this Exact Filters® unit is cut to your exact 25 x 25 x 1″ spec — no shims, no gaps, no bypass air.\u003c\/p\u003e\n\n\u003cp\u003eEven a quarter-inch of gap around a filter can allow a significant percentage of return air to bypass the media entirely, which is why the exact fit matters as much as the filter's efficiency rating.\u003c\/p\u003e\n\n\u003cp\u003eThe MERV 1-4 rating on this filter is best understood as mechanical protection rather than air cleaning. It catches debris that would otherwise reduce your coil's heat-transfer efficiency, while imposing the lowest static pressure penalty of any rating we offer.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eNominal size: 25 x 25 x 1″\u003c\/li\u003e\n  \u003cli\u003eActual dimensions: 25 x 25 x 3\/4″\u003c\/li\u003e\n  \u003cli\u003eEfficiency rating: MERV 1-4\u003c\/li\u003e\n  \u003cli\u003eQuantity: 12 filters per carton\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe 25 x 25 x 1″ dimension is one of the many non-standard sizes we make on demand, serving both retrofit installations in older homes and light-commercial properties where the return housing dates to an older era of HVAC construction.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCardboard frame with reinforced media for structural stability during handling and installation\u003c\/li\u003e\n  \u003cli\u003eMade to your exact 25 x 25 x 1″ specification — no trimming or taping required at installation\u003c\/li\u003e\n  \u003cli\u003eReplace approximately every 90 days in standard installations; shorter intervals in high-dust, smoky, or heavy-use environments\u003c\/li\u003e\n  \u003cli\u003eSold as a 12-pack so you have a full year of replacements on hand\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:15px;font-weight:bold;color:#1E2D7D;margin:0 0 12px 0;\"\u003eSame 25 x 25 x 1″ size, different efficiency rating\u003c\/p\u003e\u003ctable width=\"100%\" cellpadding=\"0\" cellspacing=\"8\" style=\"border-collapse:separate;margin:18px 0 0 0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/25x25x1-exact-pleated-merv-8-filters-12-pack\" style=\"display:block;background-color:#007B6B;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 25 x 25 x 1″ filter in MERV 8\" title=\"See the 25 x 25 x 1″ filter in MERV 8\"\u003eMERV 8\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eStandard efficiency\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/25x25x1-exact-pleated-merv-11-filters-12-pack\" style=\"display:block;background-color:#6B3FA0;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 25 x 25 x 1″ filter in MERV 11\" title=\"See the 25 x 25 x 1″ filter in MERV 11\"\u003eMERV 11\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eEnhanced efficiency\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/25x25x1-exact-pleated-merv-13-filters-12-pack\" style=\"display:block;background-color:#C8102E;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 25 x 25 x 1″ filter in MERV 13\" title=\"See the 25 x 25 x 1″ filter in MERV 13\"\u003eMERV 13\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eHighest efficiency\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ctable width=\"100%\" cellpadding=\"0\" cellspacing=\"0\" border=\"0\" style=\"border-collapse:separate;margin:24px 0 0 0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd style=\"background-color:#1E2D7D;border-radius:8px;padding:22px 24px;vertical-align:top;\"\u003e\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:18px;font-weight:bold;color:#ffffff;margin:0 0 8px 0;line-height:1.3;\"\u003eNeed 25 x 25 x 2″ or another depth?\u003c\/p\u003e\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:14px;color:#ffffff;margin:0 0 16px 0;line-height:1.55;opacity:0.95;\"\u003eThis size is available in other depths we don't stock online — reach out and our team will quote it for you, typically same business day.\u003c\/p\u003e\n\u003ctable cellpadding=\"0\" cellspacing=\"10\" border=\"0\" style=\"border-collapse:separate;margin:0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"padding:0;vertical-align:top;\"\u003e\u003ca href=\"tel:+18664698556\" style=\"display:block;background-color:#007B6B;color:#ffffff;text-decoration:none;padding:14px 22px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:16px;line-height:1.2;text-align:center;box-sizing:border-box;white-space:nowrap;\"\u003eCall 866-469-8556\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:0;vertical-align:top;\"\u003e\u003ca href=\"\/pages\/contact-us\" style=\"display:block;background-color:#ffffff;color:#1E2D7D;text-decoration:none;padding:14px 22px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:16px;line-height:1.2;text-align:center;box-sizing:border-box;white-space:nowrap;\"\u003eContact us for a quote\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Exact Filters","offers":[{"title":"Default Title","offer_id":44082636783738,"sku":"10055-01699 25 x 25 x 1 E","price":192.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/ExactM1_1268x1134_e7a1826b-7eb0-48fc-b9dc-b06e6b689f2b.jpg?v=1749318942"},{"product_id":"25x25x1-nested-glass-ez-green-filters-10059-012525-24-filters","title":"25x25x1 Flanders Nested Glass EZ-Green Filter (24 Filters)","description":"\u003cp\u003eThe \u003cstrong\u003eFlanders Nested Glass EZ-Green\u003c\/strong\u003e 25″ × 25″ × 1″ is a fiberglass panel filter with nested media layers that increase dust-holding capacity over standard spun-glass panels — while keeping the same low pressure drop and high airflow characteristics.\u003c\/p\u003e\n\u003ch3\u003eUnderstanding the MERV 1–4 rating\u003c\/h3\u003e\n\u003cp\u003eFiberglass media is rated \u003cstrong\u003eMERV 1 when clean and builds up to MERV 4\u003c\/strong\u003e as dust loads onto the fibers. That's not inconsistency — it's how spun-glass media works. A fresh filter lets the most air through while still blocking larger debris; as dust collects, the media becomes more efficient at catching finer particles. The goal of a MERV 1–4 filter isn't air quality — it's \u003cstrong\u003eequipment protection with maximum airflow\u003c\/strong\u003e. It keeps lint, hair, and large dust out of your coil and blower, which is exactly what older systems, high-airflow applications, and pre-filter duty need.\u003c\/p\u003e\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Nested layers of continuous-filament fiberglass with gradient density for progressive dust capture.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Heavy chipboard, one-piece moisture-resistant.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eService life:\u003c\/strong\u003e Up to 60 days under typical use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-1-4-fiberglass-panel-basic-air-filters-12-pack\"\u003ePrimeShield MAX Airflow (MERV 1–4)\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":12441569394810,"sku":"10059-012525","price":124.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/10059_9f141440-a905-441b-9dec-9fe4fb7163f9.png?v=1759413627"},{"product_id":"25x25x1-exact-pleated-merv-11-filters-12-pack","title":"25x25x1 Exact Filters Pleated MERV 11 (12 pack)","description":"\u003cp\u003eBuilt to order in the precise 25 x 25 x 1″ dimension you need, this Exact Filters® air filter solves a problem standard catalogs can't — a true custom fit for systems that don't accept common filter sizes.\u003c\/p\u003e\n\n\u003cp\u003eEven a quarter-inch of gap around a filter can allow a significant percentage of return air to bypass the media entirely, which is why the exact fit matters as much as the filter's efficiency rating.\u003c\/p\u003e\n\n\u003cp\u003eCompared to MERV 8, this MERV 11 media traps a greater share of the particles responsible for visible dust on surfaces and allergy symptoms: finer pet dander, mold spores, and dust-mite debris. It's a practical upgrade that most standard systems can drive without modification.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eNominal size: 25 x 25 x 1″\u003c\/li\u003e\n  \u003cli\u003eActual dimensions: 25 x 25 x 3\/4″\u003c\/li\u003e\n  \u003cli\u003eEfficiency rating: MERV 11\u003c\/li\u003e\n  \u003cli\u003eQuantity: 12 filters per carton\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eCommon applications for a 25 x 25 x 1″ custom filter include retrofit installations, legacy HVAC systems installed before standard sizes were codified, built-in return grilles that were framed to non-standard dimensions, and commercial unit housings that don't match any current off-the-shelf size.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCardboard frame with reinforced media for structural stability during handling and installation\u003c\/li\u003e\n  \u003cli\u003eReplace approximately every 90 days in standard installations; shorter intervals in high-dust, smoky, or heavy-use environments\u003c\/li\u003e\n  \u003cli\u003eOrientation arrow printed on the frame to ensure correct airflow direction at install\u003c\/li\u003e\n  \u003cli\u003eSuitable for forced-air furnaces, central AC, heat pumps, and packaged HVAC systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:15px;font-weight:bold;color:#1E2D7D;margin:0 0 12px 0;\"\u003eSame 25 x 25 x 1″ size, different efficiency rating\u003c\/p\u003e\u003ctable width=\"100%\" cellpadding=\"0\" cellspacing=\"8\" style=\"border-collapse:separate;margin:18px 0 0 0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/25x25x1-exact-ez-flow-basic-merv-4-filters-12-pack\" style=\"display:block;background-color:#000000;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 25 x 25 x 1″ filter in MERV 1-4\" title=\"See the 25 x 25 x 1″ filter in MERV 1-4\"\u003eMERV 1-4\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eBasic dust-stop\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/25x25x1-exact-pleated-merv-8-filters-12-pack\" style=\"display:block;background-color:#007B6B;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 25 x 25 x 1″ filter in MERV 8\" title=\"See the 25 x 25 x 1″ filter in MERV 8\"\u003eMERV 8\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eStandard efficiency\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/25x25x1-exact-pleated-merv-13-filters-12-pack\" style=\"display:block;background-color:#C8102E;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 25 x 25 x 1″ filter in MERV 13\" title=\"See the 25 x 25 x 1″ filter in MERV 13\"\u003eMERV 13\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eHighest efficiency\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ctable width=\"100%\" cellpadding=\"0\" cellspacing=\"0\" border=\"0\" style=\"border-collapse:separate;margin:24px 0 0 0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd style=\"background-color:#1E2D7D;border-radius:8px;padding:22px 24px;vertical-align:top;\"\u003e\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:18px;font-weight:bold;color:#ffffff;margin:0 0 8px 0;line-height:1.3;\"\u003eNeed 25 x 25 x 2″ or another depth?\u003c\/p\u003e\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:14px;color:#ffffff;margin:0 0 16px 0;line-height:1.55;opacity:0.95;\"\u003eThis size is available in other depths we don't stock online — reach out and our team will quote it for you, typically same business day.\u003c\/p\u003e\n\u003ctable cellpadding=\"0\" cellspacing=\"10\" border=\"0\" style=\"border-collapse:separate;margin:0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"padding:0;vertical-align:top;\"\u003e\u003ca href=\"tel:+18664698556\" style=\"display:block;background-color:#007B6B;color:#ffffff;text-decoration:none;padding:14px 22px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:16px;line-height:1.2;text-align:center;box-sizing:border-box;white-space:nowrap;\"\u003eCall 866-469-8556\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:0;vertical-align:top;\"\u003e\u003ca href=\"\/pages\/contact-us\" style=\"display:block;background-color:#ffffff;color:#1E2D7D;text-decoration:none;padding:14px 22px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:16px;line-height:1.2;text-align:center;box-sizing:border-box;white-space:nowrap;\"\u003eContact us for a quote\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Exact Filters","offers":[{"title":"Default Title","offer_id":20123235647610,"sku":"85655-01699 25 x 25 x 1 E","price":265.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/ExactM11_1400x1400_96c37c33-bdab-4509-bf6c-63d2ebc57f9e.jpg?v=1749244076"},{"product_id":"25x25x1-exact-pleated-merv-13-filters-12-pack","title":"25x25x1 Exact Filters Pleated MERV 13 (12 pack)","description":"\u003cp\u003eThis air filter is made to a 25 x 25 x 1″ nominal size for HVAC systems, air handlers, and return grilles that require an exact custom dimension rather than a standard retail size.\u003c\/p\u003e\n\n\u003cp\u003eEven a quarter-inch of gap around a filter can allow a significant percentage of return air to bypass the media entirely, which is why the exact fit matters as much as the filter's efficiency rating.\u003c\/p\u003e\n\n\u003cp\u003eMERV 13 targets the fine particulate fraction that lower MERV ratings allow through — including smoke, bacteria-carrying dust, and combustion byproducts. Airflow resistance is higher than MERV 8 or 11, so systems with borderline static pressure should be evaluated before switching up.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eNominal size: 25 x 25 x 1″\u003c\/li\u003e\n  \u003cli\u003eActual dimensions: 25 x 25 x 3\/4″\u003c\/li\u003e\n  \u003cli\u003eEfficiency rating: MERV 13\u003c\/li\u003e\n  \u003cli\u003eQuantity: 12 filters per carton\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis 25 x 25 x 1″ filter size is frequently ordered by homeowners with older systems, property managers handling mixed-vintage HVAC equipment, and facilities maintenance teams servicing buildings where no two return grilles seem to measure the same.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSuitable for forced-air furnaces, central AC, heat pumps, and packaged HVAC systems\u003c\/li\u003e\n  \u003cli\u003eReplace approximately every 90 days in standard installations; shorter intervals in high-dust, smoky, or heavy-use environments\u003c\/li\u003e\n  \u003cli\u003ePleated construction (or fiberglass, depending on MERV tier) designed for balanced capture and airflow\u003c\/li\u003e\n  \u003cli\u003eMade to your exact 25 x 25 x 1″ specification — no trimming or taping required at installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:15px;font-weight:bold;color:#1E2D7D;margin:0 0 12px 0;\"\u003eSame 25 x 25 x 1″ size, different efficiency rating\u003c\/p\u003e\u003ctable width=\"100%\" cellpadding=\"0\" cellspacing=\"8\" style=\"border-collapse:separate;margin:18px 0 0 0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/25x25x1-exact-ez-flow-basic-merv-4-filters-12-pack\" style=\"display:block;background-color:#000000;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 25 x 25 x 1″ filter in MERV 1-4\" title=\"See the 25 x 25 x 1″ filter in MERV 1-4\"\u003eMERV 1-4\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eBasic dust-stop\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/25x25x1-exact-pleated-merv-8-filters-12-pack\" style=\"display:block;background-color:#007B6B;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 25 x 25 x 1″ filter in MERV 8\" title=\"See the 25 x 25 x 1″ filter in MERV 8\"\u003eMERV 8\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eStandard efficiency\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/25x25x1-exact-pleated-merv-11-filters-12-pack\" style=\"display:block;background-color:#6B3FA0;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 25 x 25 x 1″ filter in MERV 11\" title=\"See the 25 x 25 x 1″ filter in MERV 11\"\u003eMERV 11\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eEnhanced efficiency\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ctable width=\"100%\" cellpadding=\"0\" cellspacing=\"0\" border=\"0\" style=\"border-collapse:separate;margin:24px 0 0 0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd style=\"background-color:#1E2D7D;border-radius:8px;padding:22px 24px;vertical-align:top;\"\u003e\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:18px;font-weight:bold;color:#ffffff;margin:0 0 8px 0;line-height:1.3;\"\u003eNeed 25 x 25 x 2″ or another depth?\u003c\/p\u003e\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:14px;color:#ffffff;margin:0 0 16px 0;line-height:1.55;opacity:0.95;\"\u003eThis size is available in other depths we don't stock online — reach out and our team will quote it for you, typically same business day.\u003c\/p\u003e\n\u003ctable cellpadding=\"0\" cellspacing=\"10\" border=\"0\" style=\"border-collapse:separate;margin:0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"padding:0;vertical-align:top;\"\u003e\u003ca href=\"tel:+18664698556\" style=\"display:block;background-color:#007B6B;color:#ffffff;text-decoration:none;padding:14px 22px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:16px;line-height:1.2;text-align:center;box-sizing:border-box;white-space:nowrap;\"\u003eCall 866-469-8556\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:0;vertical-align:top;\"\u003e\u003ca href=\"\/pages\/contact-us\" style=\"display:block;background-color:#ffffff;color:#1E2D7D;text-decoration:none;padding:14px 22px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:16px;line-height:1.2;text-align:center;box-sizing:border-box;white-space:nowrap;\"\u003eContact us for a quote\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Exact Filters","offers":[{"title":"Default Title","offer_id":20127064064122,"sku":"90013-01699 25 x 25 x 1 E","price":289.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/ExactM13_1400x1400_96fdfc8c-ab86-41b7-ade9-8b47bb70bd2f.jpg?v=1749252034"},{"product_id":"25x25x1-naturalaire-standard-merv-8-filters-12-pack","title":"25x25x1 NaturalAire Standard MERV 8 (12 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e25″ × 25″ × 1″\u003c\/strong\u003e listing (part number \u003cstrong\u003e84858.012525\u003c\/strong\u003e) of the \u003cstrong\u003eNaturalAire Standard\u003c\/strong\u003e pleated air filter delivers \u003cstrong\u003eMERV 8\u003c\/strong\u003e filtration and ships as a case of \u003cstrong\u003e12 filters\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIndividually sealed.\u003c\/strong\u003e Every NaturalAire filter ships individually wrapped inside the case — each filter protected from dust, moisture, and shipping damage until you're ready to install it. A real quality difference from bulk-packed competitors, and it matters especially for customers reordering a case at a time.\u003c\/p\u003e\n\u003ch3\u003eMERV 8 — standard efficiency\u003c\/h3\u003e\n\u003cp\u003eMERV 8 is the baseline for good residential and light commercial filtration: effective against household dust, lint, larger pollens, and dust-mite debris — with low pressure drop so it protects airflow and coil performance. It's the right choice when system protection and clean returns are the goal, not allergen-level filtration.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Pleated polyester synthetic media, metal-reinforced, bonded directly to the frame. Mechanical capture — performance doesn't fade with age.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Clay-coated recyclable moisture-resistant beverage-board with wire-mesh support. Bonded pleats prevent air bypass.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 180°F (82°C)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eStandard residential furnaces and central air systems, light commercial HVAC, and apartment\/multi-family installations. Captures dust, lint, pollen, pet dander, mold spores, and dust-mite debris.\u003c\/p\u003e\n\u003ch3\u003eReplacement schedule\u003c\/h3\u003e\n\u003cp\u003eAt 1″ depth, plan to replace this filter \u003cstrong\u003eevery 60–90 days\u003c\/strong\u003e under typical residential or light commercial loading. High-dust environments, pet homes, wildfire smoke events, or construction-adjacent sites will shorten that window. Check the filter monthly through the first cycle to calibrate your schedule.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-8-pleated-air-filters-12-pack\"\u003ePrimeShield Essential (MERV 8)\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":20292790714490,"sku":"84858-012525","price":170.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/naturalaire_standard_12pack_35f6e954-8986-4af8-bced-789fd99b797a.jpg?v=1720567455"},{"product_id":"25x25x1-naturalaire-healthy-ultra-merv-13-filters-12-pack","title":"25x25x1 NaturalAire Healthy Ultra MERV 13 (12 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e25″ × 25″ × 1″\u003c\/strong\u003e listing (part number \u003cstrong\u003e95003.012525\u003c\/strong\u003e) of the \u003cstrong\u003eNaturalAire Healthy Ultra\u003c\/strong\u003e pleated air filter delivers \u003cstrong\u003eMERV 13\u003c\/strong\u003e filtration and ships as a case of \u003cstrong\u003e12 filters\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIndividually sealed.\u003c\/strong\u003e Every NaturalAire filter ships individually wrapped inside the case — each filter protected from dust, moisture, and shipping damage until you're ready to install it. A real quality difference from bulk-packed competitors, and it matters especially for customers reordering a case at a time.\u003c\/p\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\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Multi-layer electret-free synthetic pleated media designed to capture fine particles including smoke and bacteria-sized particulates. Mechanical capture.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Clay-coated moisture-resistant beverage-board with wire-mesh media support.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 180°F (82°C)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eResidential and commercial HVAC where MERV 13 is specified — including households responding to wildfire smoke, allergy\/asthma concerns, or higher indoor-air-quality requirements. Confirm your HVAC system is rated for the increased static pressure.\u003c\/p\u003e\n\u003ch3\u003eReplacement schedule\u003c\/h3\u003e\n\u003cp\u003eAt 1″ depth, plan to replace this filter \u003cstrong\u003eevery 60–90 days\u003c\/strong\u003e under typical residential or light commercial loading. High-dust environments, pet homes, wildfire smoke events, or construction-adjacent sites will shorten that window. Check the filter monthly through the first cycle to calibrate your schedule.\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":20292956586106,"sku":"95003-012525","price":209.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/naturalaire_merv13_12pack.jpg?v=1720568213"},{"product_id":"25x25x1-megapleat-premium-high-capacity-merv-9-pleated-filter-12-pack","title":"25x25x1 AAF Flanders MEGApleat Premium MERV 9 (12 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e25″ × 25″ × 1″\u003c\/strong\u003e listing (part number \u003cstrong\u003e148-801-870\u003c\/strong\u003e) of the \u003cstrong\u003eAAF Flanders MEGApleat Premium\u003c\/strong\u003e pleated air filter delivers \u003cstrong\u003eMERV 9\u003c\/strong\u003e filtration and ships as a case of \u003cstrong\u003e12 filters\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eMERV 9 — step up from MERV 8\u003c\/h3\u003e\n\u003cp\u003eMERV 9 captures smaller particles than MERV 8 while keeping airflow resistance in reach for standard residential and light commercial systems. A practical middle-ground when you want finer filtration without jumping to MERV 11 or 13.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface premium synthetic pleated media with high dust-holding capacity. Mechanical capture — performance doesn't fade as the filter ages.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Heavy-duty moisture-resistant beverage-board with expanded-metal media support and bonded pleats to prevent air bypass.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 180°F (82°C)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eCommercial HVAC, office buildings, schools, retail, and residential applications where a premium higher-capacity pleated filter is specified.\u003c\/p\u003e\n\u003ch3\u003eReplacement schedule\u003c\/h3\u003e\n\u003cp\u003eAt 1″ depth, plan to replace this filter \u003cstrong\u003eevery 60–90 days\u003c\/strong\u003e under typical residential or light commercial loading. High-dust environments, pet homes, wildfire smoke events, or construction-adjacent sites will shorten that window. Check the filter monthly through the first cycle to calibrate your schedule.\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\/MEGApleat_M9_prod_mark_bro_AFP_1_180E.pdf?v=1612904481%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload MEGApleat Premium 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-8-pleated-air-filters-12-pack\"\u003ePrimeShield Essential (MERV 8)\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":20293872615546,"sku":"148-801-870","price":334.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/products\/MEGApleat_M9_300x_76e328f2-ac1f-4af6-81ea-35a4572c7571.png?v=1612906423"},{"product_id":"25x25x1-prepleat-merv-13-extended-surface-90013-012525-12-filters","title":"25x25x1 AAF Flanders PREpleat M13 MERV 13 (12 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e25″ × 25″ × 1″\u003c\/strong\u003e listing (part number \u003cstrong\u003e90013.012525\u003c\/strong\u003e) of the \u003cstrong\u003eAAF Flanders PREpleat M13\u003c\/strong\u003e pleated air filter delivers \u003cstrong\u003eMERV 13\u003c\/strong\u003e filtration and ships as a case of \u003cstrong\u003e12 filters\u003c\/strong\u003e.\u003c\/p\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\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Progressive-density bi-component synthetic fibers. Mechanical capture — performance does not fade as the filter ages.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Moisture-resistant beverage-board with diagonal support members and expanded-metal media support bonded to the downstream side.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 180°F (82°C)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eCommercial office, light institutional, and residential HVAC where MERV 13 is specified — including facilities responding to wildfire smoke or higher indoor-air-quality requirements. Confirm the HVAC system is rated for the increased static pressure.\u003c\/p\u003e\n\u003ch3\u003eReplacement schedule\u003c\/h3\u003e\n\u003cp\u003eAt 1″ depth, plan to replace this filter \u003cstrong\u003eevery 60–90 days\u003c\/strong\u003e under typical residential or light commercial loading. High-dust environments, pet homes, wildfire smoke events, or construction-adjacent sites will shorten that window. Check the filter monthly through the first cycle to calibrate your schedule.\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\/PrePleat_M13_PDF.pdf?v=1639548528%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload PREpleat M13 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":39638917251194,"sku":"90013-012525","price":258.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/90013_b3f2d366-ab99-41f0-94db-d24e91c4e220.png?v=1759423401"},{"product_id":"koch-disposable-fiberglass-panel-filters","title":"Koch Disposable Fiberglass Panel Filter","description":"\u003cp\u003eThe \u003cstrong\u003eKoch Disposable Fiberglass Panel\u003c\/strong\u003e is a straightforward spun-fiberglass panel filter — the baseline category for HVAC equipment protection. It's built to catch lint, hair, and large debris while letting the system breathe.\u003c\/p\u003e\n\u003ch3\u003eUnderstanding the MERV 1–4 rating\u003c\/h3\u003e\n\u003cp\u003eFiberglass media is rated \u003cstrong\u003eMERV 1 when clean and builds up to MERV 4\u003c\/strong\u003e as dust loads onto the fibers. That's not inconsistency — it's how spun-glass media works. A fresh filter lets the most air through while still blocking larger debris; as dust collects, the media becomes more efficient at catching finer particles. The goal of a MERV 1–4 filter isn't air quality — it's \u003cstrong\u003eequipment protection with maximum airflow\u003c\/strong\u003e. It keeps lint, hair, and large dust out of your coil and blower, which is exactly what older systems, high-airflow applications, and pre-filter duty need.\u003c\/p\u003e\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Continuous-filament spun fiberglass with resinous bonding agent for rigidity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e One-piece heavy chipboard, moisture-resistant.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eService life:\u003c\/strong\u003e 30 days under typical use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen fiberglass makes sense\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eRental properties and budget-conscious residential applications\u003c\/li\u003e\n  \u003cli\u003eLegacy HVAC systems not rated for higher-MERV pressure drop\u003c\/li\u003e\n  \u003cli\u003eCommercial pre-filter duty ahead of a higher-MERV final filter\u003c\/li\u003e\n  \u003cli\u003eHigh-airflow applications where pressure drop is critical\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-1-4-fiberglass-panel-basic-air-filters-12-pack\"\u003ePrimeShield MAX Airflow (MERV 1–4)\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 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Koch Disposable Fiberglass Panel Filter (12 Filters)","description":"\u003cp\u003eThe \u003cstrong\u003eKoch Disposable Fiberglass Panel\u003c\/strong\u003e in 25″ × 25″ × 1″ is a straightforward spun-fiberglass panel filter — the baseline category for HVAC equipment protection. It's built to catch lint, hair, and large debris while letting the system breathe.\u003c\/p\u003e\n\u003ch3\u003eUnderstanding the MERV 1–4 rating\u003c\/h3\u003e\n\u003cp\u003eFiberglass media is rated \u003cstrong\u003eMERV 1 when clean and builds up to MERV 4\u003c\/strong\u003e as dust loads onto the fibers. That's not inconsistency — it's how spun-glass media works. A fresh filter lets the most air through while still blocking larger debris; as dust collects, the media becomes more efficient at catching finer particles. The goal of a MERV 1–4 filter isn't air quality — it's \u003cstrong\u003eequipment protection with maximum airflow\u003c\/strong\u003e. It keeps lint, hair, and large dust out of your coil and blower, which is exactly what older systems, high-airflow applications, and pre-filter duty need.\u003c\/p\u003e\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Continuous-filament spun fiberglass with resinous bonding agent for rigidity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e One-piece heavy chipboard, moisture-resistant.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eService life:\u003c\/strong\u003e 30 days under typical use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen fiberglass makes sense\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eRental properties and budget-conscious residential applications\u003c\/li\u003e\n  \u003cli\u003eLegacy HVAC systems not rated for higher-MERV pressure drop\u003c\/li\u003e\n  \u003cli\u003eCommercial pre-filter duty ahead of a higher-MERV final filter\u003c\/li\u003e\n  \u003cli\u003eHigh-airflow applications where pressure drop is critical\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/Disposable_Panel_Filters.pdf?v=1729024430%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload Koch Fiberglass Panel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? 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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":"Koch","offers":[{"title":"Default Title","offer_id":43896640831610,"sku":"274-250-250","price":96.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/koch_disposable_panel_filter_004bd46f-3f9d-4da1-a148-62ba2f5f1c45.jpg?v=1759428859"},{"product_id":"25x25x1-koch-disposable-polyester-panel-284-250-250-12-filters","title":"25x25x1 Koch Disposable Polyester Panel Filter (12 Filters)","description":"\u003cp\u003eThe \u003cstrong\u003eKoch Disposable Polyester Panel\u003c\/strong\u003e filter in 25″ × 25″ × 1″ is a budget-friendly panel filter built for equipment protection and high airflow. Polyester media is tougher and more durable than spun fiberglass — it holds its shape better in high-airflow installations and doesn't shed fibers into the airstream.\u003c\/p\u003e\n\u003ch3\u003eEquipment protection first, filtration second\u003c\/h3\u003e\n\u003cp\u003eLike other MERV 1–4 panel filters, Koch disposable polyester is designed to protect the coil and blower from lint, hair, and large debris — not to filter fine dust or allergens. For allergen-level filtration, step up to a pleated MERV 8 or higher.\u003c\/p\u003e\n\u003ch3\u003eUnderstanding the MERV 1–4 rating\u003c\/h3\u003e\n\u003cp\u003eFiberglass media is rated \u003cstrong\u003eMERV 1 when clean and builds up to MERV 4\u003c\/strong\u003e as dust loads onto the fibers. That's not inconsistency — it's how spun-glass media works. A fresh filter lets the most air through while still blocking larger debris; as dust collects, the media becomes more efficient at catching finer particles. 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Our house brand \u003ca href=\"\/products\/merv-1-4-fiberglass-panel-basic-air-filters-12-pack\"\u003ePrimeShield MAX Airflow (MERV 1–4)\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":"Koch","offers":[{"title":"Default Title","offer_id":43896643092602,"sku":"284-250-250","price":106.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/koch_disposable_panel_filter_ab3dc25e-1fc4-44ca-9b7a-53cc78eee70e.jpg?v=1731376551"},{"product_id":"25x25x1-koch-multi-pleat-xl8-standard-capacity-merv-8-102-041-014-12-filters","title":"25x25x1 Koch Multi-Pleat XL8 MERV 8 Standard Capacity (12 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e25″ × 25″ × 1″\u003c\/strong\u003e listing (part number \u003cstrong\u003e102-041-014\u003c\/strong\u003e) of the \u003cstrong\u003eKoch Multi-Pleat XL8\u003c\/strong\u003e pleated air filter delivers \u003cstrong\u003eMERV 8\u003c\/strong\u003e filtration in the \u003cstrong\u003eStandard Capacity\u003c\/strong\u003e configuration and ships as a case of \u003cstrong\u003e12 filters\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat Standard Capacity means\u003c\/h3\u003e\n\u003cp\u003eThe SC (Standard Capacity) configuration is the everyday workhorse of the Multi-Pleat XL8 line: MERV 8 filtration with lower initial resistance than the High Capacity variant. For most homes and light commercial spaces, SC balances filter cost, airflow, and dust-holding capacity.\u003c\/p\u003e\n\u003ch3\u003eMERV 8 — standard efficiency\u003c\/h3\u003e\n\u003cp\u003eMERV 8 is the baseline for good residential and light commercial filtration: effective against household dust, lint, larger pollens, and dust-mite debris — with low pressure drop so it protects airflow and coil performance. It's the right choice when system protection and clean returns are the goal, not allergen-level filtration.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e 100% synthetic blended fibers, engineered for high initial efficiency and low pressure drop. Mechanical capture — performance doesn't fade.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Recyclable beverage-board frame with double-wall construction for high-humidity durability. Expanded galvanized-steel grid bonded to the air-exiting side maintains pleat uniformity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 200°F (93°C) continuous\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eCommercial office buildings, schools, retail, light industrial, and residential HVAC where extended-surface pleated filtration is specified. UL 900 and ULC-S111-07 certified.\u003c\/p\u003e\n\u003ch3\u003eReplacement schedule\u003c\/h3\u003e\n\u003cp\u003eAt 1″ depth, plan to replace this filter \u003cstrong\u003eevery 60–90 days\u003c\/strong\u003e under typical residential or light commercial loading. High-dust environments, pet homes, wildfire smoke events, or construction-adjacent sites will shorten that window. Check the filter monthly through the first cycle to calibrate your schedule.\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\/Koch_Multi-Pleat_XL8_SC_2024-3.pdf?v=1731365417%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload Multi-Pleat XL8 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-8-pleated-air-filters-12-pack\"\u003ePrimeShield Essential (MERV 8)\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":"Koch","offers":[{"title":"Default Title","offer_id":43896644698234,"sku":"102-041-014","price":130.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/koch_xl8_0a7b2cd3-9b01-4b57-90b8-a1a55c212f40.png?v=1759428881"},{"product_id":"max-merv-9-washable-electrostatic-air-filter","title":"PrimeShield WashGuard Metal HVAC Air Filter - Washable \u0026 Reusable","description":"\u003ch1 dir=\"ltr\" data-pm-slice=\"1 1 []\"\u003eRTF MERV Rated Washable Filter – Elite MERV 8 Air Purification\u003c\/h1\u003e\n\u003cp dir=\"ltr\"\u003eBreathe easier with the RTF Filters Co. MERV Washable Filter, crafted by a leading innovator in washable filter technology. This premium, reusable filter boasts a top-tier MERV 8 rating, delivering unmatched air quality by capturing dust, pollen, and other airborne particles with exceptional efficiency. Its cutting-edge design features a high-performance filtration media encased between two robust layers of expanded aluminum, ensuring durability and reliability. Infused with a state-of-the-art antimicrobial coating, the MERV filter prevents mold and bacterial growth, maintaining its superior MERV 8 performance through repeated wash cycles.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eEngineered for resilience, the filter’s sturdy aluminum frame, complete with precision-mitered corners and reinforced rivets, is built to thrive in demanding environments like residential HVAC systems, commercial spaces, schools, offices, and light industrial settings. Operating seamlessly at temperatures up to 180°F, it guarantees consistent performance. With a low pressure drop (0.14” w.g. at 1180 CFM), this filter optimizes airflow, enhancing HVAC efficiency and reducing energy costs. Available in standard or custom sizes (1”, 2”, or 4” thicknesses), it’s the ultimate solution for cleaner, healthier air. Plus, enjoy \u003cstrong\u003efree shipping\u003c\/strong\u003e on every order!\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003eWhy Choose the RTF Washable Filter?\u003c\/h2\u003e\n\u003cul class=\"tight\" data-tight=\"true\" dir=\"ltr\"\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eSuperior Air Quality\u003c\/strong\u003e: MERV 8 rating captures contaminants with precision, independently verified for top performance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eEco-Friendly \u0026amp; Cost-Effective\u003c\/strong\u003e: Washable and reusable, retaining MERV 8 efficiency to save on replacements.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eHealth-First Design\u003c\/strong\u003e: Antimicrobial coating eliminates mold and bacteria for safer air.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eUnrivaled Durability\u003c\/strong\u003e: Robust aluminum frame with mitered corners and rivets ensures long-lasting use.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eEnergy Efficient\u003c\/strong\u003e: Low pressure drop boosts airflow and cuts energy costs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eTailored Fit\u003c\/strong\u003e: Standard or custom sizes (1”, 2”, 4” thicknesses) for any system.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eFree Shipping\u003c\/strong\u003e: Delivered to your door at no extra cost.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 dir=\"ltr\"\u003eCleaning Tips for Your RTF Washable Filter\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003eTo maintain peak performance and extend the life of your MERV Washable Filter, follow these simple cleaning steps:\u003c\/p\u003e\n\u003col class=\"tight\" data-tight=\"true\" dir=\"ltr\"\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eRemove the Filter\u003c\/strong\u003e: Turn off your HVAC system and carefully remove the filter from its housing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eRinse with Water\u003c\/strong\u003e: Use a garden hose or low-pressure water source to rinse the filter, directing water from the clean side (air exit side) to the dirty side to flush out debris. Avoid high-pressure water to prevent damage.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eUse Mild Detergent (Optional)\u003c\/strong\u003e: For stubborn dirt, apply a mild dish soap solution with a soft brush or cloth. Gently scrub the filter’s surface, then rinse thoroughly to remove all soap residue.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eAir Dry Completely\u003c\/strong\u003e: Allow the filter to air dry fully in a well-ventilated area or under sunlight. Ensure it’s completely dry before reinstalling to prevent mold growth.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eReinstall\u003c\/strong\u003e: Place the filter back into the HVAC system, ensuring proper orientation (check the airflow direction arrow on the frame).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eClean Regularly\u003c\/strong\u003e: Depending on your environment, clean every 1-3 months for optimal performance, or more frequently in high-dust areas.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp dir=\"ltr\"\u003eOrder your RTF Filters Co. MERV Rated Washable Filter today and experience cleaner air, energy savings, and sustainable performance from a leader in washable filter innovation! Need a custom size? Contact our support team to customize your order.\u003c\/p\u003e","brand":"RTF","offers":[{"title":"8x24x1","offer_id":43901318267002,"sku":"MM9082401","price":149.99,"currency_code":"USD","in_stock":true},{"title":"10x10x1","offer_id":43901318299770,"sku":"MM9101001","price":149.99,"currency_code":"USD","in_stock":true},{"title":"10x20x1","offer_id":43901318332538,"sku":"MM9102001","price":149.99,"currency_code":"USD","in_stock":true},{"title":"10x24x1","offer_id":43901318365306,"sku":"MM9102401","price":149.99,"currency_code":"USD","in_stock":true},{"title":"10x25x1","offer_id":43901318398074,"sku":"MM9102501","price":149.99,"currency_code":"USD","in_stock":true},{"title":"10x30x1","offer_id":43901318430842,"sku":"MM9103001","price":149.99,"currency_code":"USD","in_stock":true},{"title":"12x12x1","offer_id":43901318463610,"sku":"MM9121201","price":149.99,"currency_code":"USD","in_stock":true},{"title":"12x18x1","offer_id":43901318496378,"sku":"MM9121801","price":149.99,"currency_code":"USD","in_stock":true},{"title":"12x20x1","offer_id":43901318529146,"sku":"MM9122001","price":149.99,"currency_code":"USD","in_stock":true},{"title":"12x24x1","offer_id":43901318561914,"sku":"MM9122401","price":149.99,"currency_code":"USD","in_stock":true},{"title":"12x25x1","offer_id":43901318594682,"sku":"MM9122501","price":149.99,"currency_code":"USD","in_stock":true},{"title":"12x30x1","offer_id":43901318627450,"sku":"MM9123001","price":179.99,"currency_code":"USD","in_stock":true},{"title":"12x36x1","offer_id":43901318660218,"sku":"MM9123601","price":179.99,"currency_code":"USD","in_stock":true},{"title":"13x20x1","offer_id":43901318692986,"sku":"MM9132001","price":149.99,"currency_code":"USD","in_stock":true},{"title":"13x21x1","offer_id":43901318725754,"sku":"MM9132101","price":149.99,"currency_code":"USD","in_stock":true},{"title":"14x14x1","offer_id":43901318758522,"sku":"MM9141401","price":149.99,"currency_code":"USD","in_stock":true},{"title":"14x18x1","offer_id":43901318791290,"sku":"MM9141801","price":149.99,"currency_code":"USD","in_stock":true},{"title":"14x20x1","offer_id":43901318824058,"sku":"MM9142001","price":149.99,"currency_code":"USD","in_stock":true},{"title":"14x22x1","offer_id":43901318856826,"sku":"MM9142201","price":149.99,"currency_code":"USD","in_stock":false},{"title":"14x24x1","offer_id":43901318889594,"sku":"MM9142401","price":149.99,"currency_code":"USD","in_stock":true},{"title":"14x25x1","offer_id":43901318922362,"sku":"MM9142501","price":149.99,"currency_code":"USD","in_stock":true},{"title":"14x30x1","offer_id":43901318955130,"sku":"MM9143001","price":179.99,"currency_code":"USD","in_stock":true},{"title":"15x20x1","offer_id":43901318987898,"sku":"MM9152001","price":149.99,"currency_code":"USD","in_stock":true},{"title":"15x24x1","offer_id":43901319020666,"sku":"MM9152401","price":149.99,"currency_code":"USD","in_stock":true},{"title":"15x25x1","offer_id":43901319053434,"sku":"MM9152501","price":149.99,"currency_code":"USD","in_stock":true},{"title":"16x16x1","offer_id":43901319086202,"sku":"MM9161601","price":149.99,"currency_code":"USD","in_stock":true},{"title":"16x18x1","offer_id":43901319118970,"sku":"MM9161801","price":149.99,"currency_code":"USD","in_stock":true},{"title":"16x20x1","offer_id":43901319151738,"sku":"MM9162001","price":149.99,"currency_code":"USD","in_stock":true},{"title":"16x22x1","offer_id":43901319184506,"sku":"MM9162201","price":149.99,"currency_code":"USD","in_stock":true},{"title":"16x24x1","offer_id":43901319217274,"sku":"MM9162401","price":149.99,"currency_code":"USD","in_stock":true},{"title":"16x25x1","offer_id":43901319250042,"sku":"MM9162501","price":149.99,"currency_code":"USD","in_stock":true},{"title":"16x30x1","offer_id":43901319282810,"sku":"MM9163001","price":179.99,"currency_code":"USD","in_stock":true},{"title":"16x32x1","offer_id":43901319315578,"sku":"MM9163201","price":179.99,"currency_code":"USD","in_stock":true},{"title":"16x36x1","offer_id":43901319348346,"sku":"MM9163601","price":189.99,"currency_code":"USD","in_stock":true},{"title":"16-3\/8x21-1\/2x1","offer_id":43901319381114,"sku":"MM9163821","price":159.99,"currency_code":"USD","in_stock":true},{"title":"18x18x1","offer_id":43901319413882,"sku":"MM9181801","price":149.99,"currency_code":"USD","in_stock":true},{"title":"18x20x1","offer_id":43901319446650,"sku":"MM9182001","price":149.99,"currency_code":"USD","in_stock":true},{"title":"18x24x1","offer_id":43901319479418,"sku":"MM9182401","price":149.99,"currency_code":"USD","in_stock":true},{"title":"18x25x1","offer_id":43901319512186,"sku":"MM9182501","price":149.99,"currency_code":"USD","in_stock":true},{"title":"18x30x1","offer_id":43901319544954,"sku":"MM9183001","price":179.99,"currency_code":"USD","in_stock":true},{"title":"18x32x1","offer_id":43901319577722,"sku":"MM9183201","price":179.99,"currency_code":"USD","in_stock":true},{"title":"18x36x1","offer_id":43901319610490,"sku":"MM9183601","price":189.99,"currency_code":"USD","in_stock":true},{"title":"19x20x1","offer_id"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Rinse it out monthly, let it dry, and reinstall — no consumable to reorder, no box to throw away. Typical service life is \u003cstrong\u003e5–10+ years\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eWashGuard is produced to PrimeShield specifications by one or more partner manufacturers, delivering the same build quality as the top branded washable filters at a better price point.\u003c\/p\u003e\n\u003ch3\u003eWhen to choose WashGuard\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eRental properties where tenants skip filter changes\u003c\/li\u003e\n  \u003cli\u003eCommercial facilities looking to eliminate the ongoing filter-spend line\u003c\/li\u003e\n  \u003cli\u003eHouseholds prioritizing sustainability and waste reduction\u003c\/li\u003e\n  \u003cli\u003ePre-filter duty in multi-stage systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rust-resistant aluminum — holds up to repeated washing without corrosion.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Layered metal mesh — captures lint, hair, and large debris without shedding fibers.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFiltration tier:\u003c\/strong\u003e MERV 1–4 (equipment protection and airflow, not allergen-level filtration).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCare instructions\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eRinse every 30–60 days with warm water from the downstream side\u003c\/li\u003e\n  \u003cli\u003eMild dish detergent for heavy loading\u003c\/li\u003e\n  \u003cli\u003eShake off excess water, let air-dry completely before reinstalling\u003c\/li\u003e\n  \u003cli\u003eNote the airflow-direction arrow before removing\u003c\/li\u003e\n\u003c\/ul\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":"RTF","offers":[{"title":"Default Title","offer_id":43902481825914,"sku":"MM9252501","price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/RTF_washable_1400x1400_59090126-284c-421d-8c7f-30d1c280d7c1.jpg?v=1759429467"},{"product_id":"25x25x1-polyklean-blue-pads-358-011-870-40-pads","title":"25x25x1 PolyKlean Blue Dry Pad 358-011-870 (40 Pads)","description":"\u003cp\u003eThis \u003cstrong\u003e25″ × 25″ × 1″\u003c\/strong\u003e \u003cstrong\u003ePolyKlean Blue\u003c\/strong\u003e dry pad (part number 358-011-870) is a commercial polyester filter media, designed for medium-to-heavy-duty commercial and industrial filtration applications.\u003c\/p\u003e\n\u003ch3\u003eWhat makes PolyKlean different\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-loft polyester fibers\u003c\/strong\u003e with large fiber surface area — holds more dirt with less pressure drop than competitive media\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePressure-sensitive dry-tack adhesive\u003c\/strong\u003e on the air-leaving side — captures loaded particulate so it doesn't re-entrain into the airstream\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNon-toxic, non-allergenic\u003c\/strong\u003e — safe for occupied spaces\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFully incinerable\u003c\/strong\u003e — simple disposal for contaminated applications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy to handle\u003c\/strong\u003e — cuts cleanly with shop scissors or a utility knife for custom housings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical applications\u003c\/h3\u003e\n\u003cp\u003ePre-filter duty in multi-stage commercial HVAC, paint-booth intake pre-filtration, spray-booth exhaust (with appropriate downstream scrubbing), light industrial ventilation, and any application where bulk media lets you build to exact size at better cost than ordering individual panels.\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":43918118191226,"sku":"358-011-870","price":237.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/PolyKlean_blue_filter_web.png?v=1734478412"},{"product_id":"25x25x1-koch-multi-pleat-xl8-merv-8-high-capacity-102-031-014-12-filters","title":"25x25x1 Koch Multi-Pleat XL8 MERV 8 High Capacity (12 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e25″ × 25″ × 1″\u003c\/strong\u003e listing (part number \u003cstrong\u003e102-031-014\u003c\/strong\u003e) of the \u003cstrong\u003eKoch Multi-Pleat XL8\u003c\/strong\u003e pleated air filter delivers \u003cstrong\u003eMERV 8\u003c\/strong\u003e filtration in the \u003cstrong\u003eHigh Capacity\u003c\/strong\u003e configuration and ships as a case of \u003cstrong\u003e12 filters\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat makes the HC (High Capacity) different?\u003c\/h3\u003e\n\u003cp\u003eThe High Capacity variant uses a denser pleat pattern, giving it more media surface area in the same footprint. More surface area means more dust can load before reaching end-of-life pressure drop — so HC filters last longer in dusty environments, light commercial settings, and pre-filter applications where replacement frequency is a cost driver.\u003c\/p\u003e\n\u003ch3\u003eMERV 8 — standard efficiency\u003c\/h3\u003e\n\u003cp\u003eMERV 8 is the baseline for good residential and light commercial filtration: effective against household dust, lint, larger pollens, and dust-mite debris — with low pressure drop so it protects airflow and coil performance. It's the right choice when system protection and clean returns are the goal, not allergen-level filtration.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e 100% synthetic blended fibers, engineered for high initial efficiency and low pressure drop. Mechanical capture — performance doesn't fade.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Recyclable beverage-board frame with double-wall construction for high-humidity durability. Expanded galvanized-steel grid bonded to the air-exiting side maintains pleat uniformity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 200°F (93°C) continuous\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eCommercial office buildings, schools, retail, light industrial, and residential HVAC where extended-surface pleated filtration is specified. UL 900 and ULC-S111-07 certified.\u003c\/p\u003e\n\u003ch3\u003eReplacement schedule\u003c\/h3\u003e\n\u003cp\u003eAt 1″ depth, plan to replace this filter \u003cstrong\u003eevery 60–90 days\u003c\/strong\u003e under typical residential or light commercial loading. High-dust environments, pet homes, wildfire smoke events, or construction-adjacent sites will shorten that window. Check the filter monthly through the first cycle to calibrate your schedule.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-8-pleated-air-filters-12-pack\"\u003ePrimeShield Essential (MERV 8)\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":"Koch","offers":[{"title":"Default Title","offer_id":43937901609082,"sku":"102-031-014","price":304.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_5b007a4f-86b6-4793-b1c7-07a86bd3f4dc.jpg?v=1742185134"},{"product_id":"25x25x1-koch-multi-pleat-xl10-merv-10-high-capacity-102-121-014-12-filters","title":"25x25x1 Koch Multi-Pleat XL10 MERV 10 High Capacity (12 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e25″ × 25″ × 1″\u003c\/strong\u003e listing (part number \u003cstrong\u003e102-121-014\u003c\/strong\u003e) of the \u003cstrong\u003eKoch Multi-Pleat XL10\u003c\/strong\u003e pleated air filter delivers \u003cstrong\u003eMERV 10\u003c\/strong\u003e filtration in the \u003cstrong\u003eHigh Capacity\u003c\/strong\u003e configuration and ships as a case of \u003cstrong\u003e12 filters\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat makes the HC (High Capacity) different?\u003c\/h3\u003e\n\u003cp\u003eThe High Capacity variant uses a denser pleat pattern, giving it more media surface area in the same footprint. More surface area means more dust can load before reaching end-of-life pressure drop — so HC filters last longer in dusty environments, light commercial settings, and pre-filter applications where replacement frequency is a cost driver.\u003c\/p\u003e\n\u003ch3\u003eWhat MERV 10 captures\u003c\/h3\u003e\n\u003cp\u003eFiner household dust, most pollen, mold spores, pet dander, and larger bacteria-sized particles — a practical step up for allergy-sensitive homes, wildfire-smoke regions, and light commercial spaces. Mechanical (not electrostatic) capture means performance doesn't fade as the filter loads.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e 100% synthetic blended fibers, engineered for high initial efficiency and low pressure drop. Mechanical capture — performance doesn't fade.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Recyclable beverage-board frame with double-wall construction for high-humidity durability. Expanded galvanized-steel grid bonded to the air-exiting side maintains pleat uniformity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 200°F (93°C) continuous\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eCommercial office buildings, schools, retail, light industrial, and residential HVAC where extended-surface pleated filtration is specified. UL 900 and ULC-S111-07 certified.\u003c\/p\u003e\n\u003ch3\u003eReplacement schedule\u003c\/h3\u003e\n\u003cp\u003eAt 1″ depth, plan to replace this filter \u003cstrong\u003eevery 60–90 days\u003c\/strong\u003e under typical residential or light commercial loading. High-dust environments, pet homes, wildfire smoke events, or construction-adjacent sites will shorten that window. Check the filter monthly through the first cycle to calibrate your schedule.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-10-pleated-air-filters-12-pack\"\u003ePrimeShield Enhanced (MERV 10)\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":"Koch","offers":[{"title":"Default Title","offer_id":43938127642746,"sku":"102-121-014","price":336.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_8e1f73e7-1a39-4a0a-bbb3-72e50ba4f856.jpg?v=1742255879"},{"product_id":"25x25x1-koch-multi-pleat-xl11-merv-11-102-091-014-12-filters","title":"25x25x1 Koch Multi-Pleat XL11 MERV 11 (12 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e25″ × 25″ × 1″\u003c\/strong\u003e listing (part number \u003cstrong\u003e102-091-014\u003c\/strong\u003e) of the \u003cstrong\u003eKoch Multi-Pleat XL11\u003c\/strong\u003e pleated air filter delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration and ships as a case of \u003cstrong\u003e12 filters\u003c\/strong\u003e.\u003c\/p\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\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e 100% synthetic blended fibers, engineered for high initial efficiency and low pressure drop. Mechanical capture — performance doesn't fade.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Recyclable beverage-board frame with double-wall construction for high-humidity durability. Expanded galvanized-steel grid bonded to the air-exiting side maintains pleat uniformity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 200°F (93°C) continuous\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eCommercial office buildings, schools, retail, light industrial, and residential HVAC where extended-surface pleated filtration is specified. UL 900 and ULC-S111-07 certified.\u003c\/p\u003e\n\u003ch3\u003eReplacement schedule\u003c\/h3\u003e\n\u003cp\u003eAt 1″ depth, plan to replace this filter \u003cstrong\u003eevery 60–90 days\u003c\/strong\u003e under typical residential or light commercial loading. High-dust environments, pet homes, wildfire smoke events, or construction-adjacent sites will shorten that window. Check the filter monthly through the first cycle to calibrate your schedule.\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":"Koch","offers":[{"title":"Default Title","offer_id":43938130788474,"sku":"102-091-014","price":338.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_520dd96c-583c-42dd-8301-22cba8112f5b.jpg?v=1742256846"},{"product_id":"25x25x1-koch-multi-pleat-xl11-merv-11-high-capacity-102-081-014-12-filters","title":"25x25x1 Koch Multi-Pleat XL11 MERV 11 High Capacity (12 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e25″ × 25″ × 1″\u003c\/strong\u003e listing (part number \u003cstrong\u003e102-081-014\u003c\/strong\u003e) of the \u003cstrong\u003eKoch Multi-Pleat XL11\u003c\/strong\u003e pleated air filter delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration in the \u003cstrong\u003eHigh Capacity\u003c\/strong\u003e configuration and ships as a case of \u003cstrong\u003e12 filters\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat makes the HC (High Capacity) different?\u003c\/h3\u003e\n\u003cp\u003eThe High Capacity variant uses a denser pleat pattern, giving it more media surface area in the same footprint. More surface area means more dust can load before reaching end-of-life pressure drop — so HC filters last longer in dusty environments, light commercial settings, and pre-filter applications where replacement frequency is a cost driver.\u003c\/p\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\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e 100% synthetic blended fibers, engineered for high initial efficiency and low pressure drop. Mechanical capture — performance doesn't fade.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Recyclable beverage-board frame with double-wall construction for high-humidity durability. Expanded galvanized-steel grid bonded to the air-exiting side maintains pleat uniformity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 200°F (93°C) continuous\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eCommercial office buildings, schools, retail, light industrial, and residential HVAC where extended-surface pleated filtration is specified. UL 900 and ULC-S111-07 certified.\u003c\/p\u003e\n\u003ch3\u003eReplacement schedule\u003c\/h3\u003e\n\u003cp\u003eAt 1″ depth, plan to replace this filter \u003cstrong\u003eevery 60–90 days\u003c\/strong\u003e under typical residential or light commercial loading. High-dust environments, pet homes, wildfire smoke events, or construction-adjacent sites will shorten that window. Check the filter monthly through the first cycle to calibrate your schedule.\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":"Koch","offers":[{"title":"Default Title","offer_id":43938245640314,"sku":"102-081-014","price":350.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_35045876-2262-4732-94bf-c31f0b0202dd.jpg?v=1742258500"},{"product_id":"25x25x1-koch-multi-pleat-green13-merv-13-high-capacity-102-101-014-12-filters","title":"25x25x1 Koch Multi-Pleat Green13 MERV 13 High Capacity (12 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e25″ × 25″ × 1″\u003c\/strong\u003e listing (part number \u003cstrong\u003e102-101-014\u003c\/strong\u003e) of the \u003cstrong\u003eKoch Multi-Pleat Green13\u003c\/strong\u003e pleated air filter delivers \u003cstrong\u003eMERV 13\u003c\/strong\u003e filtration in the \u003cstrong\u003eHigh Capacity\u003c\/strong\u003e configuration and ships as a case of \u003cstrong\u003e12 filters\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat makes the HC (High Capacity) different?\u003c\/h3\u003e\n\u003cp\u003eThe High Capacity variant uses a denser pleat pattern, giving it more media surface area in the same footprint. More surface area means more dust can load before reaching end-of-life pressure drop — so HC filters last longer in dusty environments, light commercial settings, and pre-filter applications where replacement frequency is a cost driver.\u003c\/p\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\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e 100% synthetic blended fibers, engineered for high initial efficiency and low pressure drop. Mechanical capture — performance doesn't fade.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Recyclable beverage-board frame with double-wall construction for high-humidity durability. Expanded galvanized-steel grid bonded to the air-exiting side maintains pleat uniformity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 200°F (93°C) continuous\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eCommercial office buildings, schools, retail, light industrial, and residential HVAC where extended-surface pleated filtration is specified. UL 900 and ULC-S111-07 certified.\u003c\/p\u003e\n\u003ch3\u003eReplacement schedule\u003c\/h3\u003e\n\u003cp\u003eAt 1″ depth, plan to replace this filter \u003cstrong\u003eevery 60–90 days\u003c\/strong\u003e under typical residential or light commercial loading. High-dust environments, pet homes, wildfire smoke events, or construction-adjacent sites will shorten that window. Check the filter monthly through the first cycle to calibrate your schedule.\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":"Koch","offers":[{"title":"Default Title","offer_id":43938250883194,"sku":"102-101-014","price":783.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_ed8af922-9326-4ef6-b4c1-4fd8765858f9.jpg?v=1742260311"},{"product_id":"25-x-25-x-1-2-polyklean-white-dry-pads-358-035-870-60-pads","title":"25x25x1\/2 PolyKlean White Dry Pad 358-035-870 (60 Pads)","description":"\u003cp\u003eThis \u003cstrong\u003e25″ × 25″ × ½″\u003c\/strong\u003e \u003cstrong\u003ePolyKlean White\u003c\/strong\u003e dry pad (part number 358-035-870) is a commercial polyester filter media, designed for medium-to-heavy-duty commercial and industrial filtration applications.\u003c\/p\u003e\n\u003ch3\u003eWhat makes PolyKlean different\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-loft polyester fibers\u003c\/strong\u003e with large fiber surface area — holds more dirt with less pressure drop than competitive media\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePressure-sensitive dry-tack adhesive\u003c\/strong\u003e on the air-leaving side — captures loaded particulate so it doesn't re-entrain into the airstream\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNon-toxic, non-allergenic\u003c\/strong\u003e — safe for occupied spaces\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFully incinerable\u003c\/strong\u003e — simple disposal for contaminated applications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy to handle\u003c\/strong\u003e — cuts cleanly with shop scissors or a utility knife for custom housings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical applications\u003c\/h3\u003e\n\u003cp\u003ePre-filter duty in multi-stage commercial HVAC, paint-booth intake pre-filtration, spray-booth exhaust (with appropriate downstream scrubbing), light industrial ventilation, and any application where bulk media lets you build to exact size at better cost than ordering individual panels.\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":43942843515002,"sku":"358-035-870","price":200.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/PolyKlean_white_filter_web_c0a1b87b-e56b-49dd-9ecb-b66a4185760e.png?v=1744384802"},{"product_id":"merv-10-pleated-air-filters-12-pack","title":"PrimeShield Enhanced MERV 10 Pleated Air Filters (12 Pack)","description":"\u003cp\u003eThe PrimeShield Enhanced MERV 10 pleated filter is the sweet spot between MERV 8 and MERV 11 — captures nearly twice the fine particulate of MERV 8, adds pet dander and mold spore protection, and still fits comfortably in the vast majority of residential and light-commercial systems without airflow concerns. If you have one or two pets, mild seasonal allergies, or you want an air-quality upgrade without the pressure drop of higher ratings, MERV 10 is your filter.\u003c\/p\u003e\n\n\u003ch2\u003eWhat MERV 10 Captures Beyond MERV 8\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePet dander\u003c\/strong\u003e — the particle size MERV 8 largely misses\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFiner mold spores\u003c\/strong\u003e — particles in the 1–3 micron range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHumidifier dust \u0026amp; auto emissions particles\u003c\/strong\u003e — relevant for homes near traffic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSome household bacteria\u003c\/strong\u003e — though virus-carriers still require MERV 13\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKey Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eV-Pleat design\u003c\/strong\u003e — more media surface area per square foot than flat pleats\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-electrostatic synthetic media\u003c\/strong\u003e — captures particles mechanically, so performance doesn't degrade as the filter loads (electrostatic filters lose efficiency over life)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-duty moisture-resistant frame\u003c\/strong\u003e with diagonal supports — won't warp, flex, or bypass air\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpanded metal support grid\u003c\/strong\u003e laminated to the air-leaving side — maintains pleat geometry as the filter loads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e90-day service life\u003c\/strong\u003e — three changes per year per system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecyclable media\u003c\/strong\u003e — 100% synthetic non-woven, no blended materials\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho This Is For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHouseholds with 1–2 pets\u003c\/strong\u003e — captures the dander MERV 8 lets through\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMild seasonal allergy sufferers\u003c\/strong\u003e without needing MERV 13's airflow tradeoff\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHomes near traffic or industrial zones\u003c\/strong\u003e — captures auto-emission fine particles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOffices \u0026amp; light-commercial\u003c\/strong\u003e upgrading IAQ from baseline MERV 8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFacilities\u003c\/strong\u003e where MERV 13 pressure drop would stress the system\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eNot Ideal For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWildfire-prone regions\u003c\/strong\u003e — go \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003eMERV 13\u003c\/a\u003e for smoke capture\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImmunocompromised households\u003c\/strong\u003e — go MERV 13 for virus carrier capture\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple pets or severe allergies\u003c\/strong\u003e — consider \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003eMERV 11\u003c\/a\u003e for finer capture\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuild Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e 100% synthetic non-woven, recyclable, gradient density composition, mechanical particle capture (no electrostatic charge)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Heavy-duty two-piece moisture-resistant frame, diagonal support members, media bonded at all contact points\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupport grid:\u003c\/strong\u003e Expanded metal laminated to air-leaving side for pleat stability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaptures:\u003c\/strong\u003e Dust, pollen, lint, mold spores, pet dander, humidifier dust, auto emissions particulate, some household bacteria\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLife:\u003c\/strong\u003e Recommended 90-day changeout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 12 filters per pack\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eMERV 10 vs. the Competition\u003c\/h2\u003e\n\u003cp\u003eMERV 10 is roughly comparable to \u003cstrong\u003eFiltrete MPR 1000\u003c\/strong\u003e and \u003cstrong\u003eFPR 7\u003c\/strong\u003e ratings on competing brand scales. If you've been buying one of those and want to match it, MERV 10 is the equivalent — often at meaningfully better case pricing.\u003c\/p\u003e\n\n\u003ch2\u003eDon't See Your Size?\u003c\/h2\u003e\n\u003cp\u003eWe cut \u003ca href=\"\/collections\/custom-filters\"\u003ecustom MERV 10 filters\u003c\/a\u003e to 1\/8\" precision — ideal for older systems, unusual HVAC cabinets, and commercial applications.\u003c\/p\u003e\n\n\u003ch2\u003eFilter Fit Guarantee\u003c\/h2\u003e\n\u003cp\u003eIf a filter doesn't fit your system as expected, we'll make it right. Not sure whether MERV 10 or MERV 11 is right for you? Take our \u003ca href=\"\/pages\/merv-quiz\"\u003eMERV Rating Quiz\u003c\/a\u003e or call \u003cstrong\u003e1-866-469-8556\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eManufacturing Notes\u003c\/h3\u003e\n\u003cp\u003e\u003cem\u003ePrimeShield Enhanced filters are produced to our proprietary PrimeShield specifications by one or more partner manufacturers. Part numbers may vary by production run, but every filter meets identical specifications: 100% synthetic non-woven recyclable media with gradient density composition, mechanical (non-electrostatic) particle capture, heavy-duty two-piece moisture-resistant frame with diagonal support members, expanded metal support grid laminated to the air-leaving side. Size and performance are consistent across all production runs.\u003c\/em\u003e\u003c\/p\u003e","brand":"RTF","offers":[{"title":"10x10x1","offer_id":44114859327610,"sku":null,"price":99.99,"currency_code":"USD","in_stock":true},{"title":"10x20x1","offer_id":44114859360378,"sku":null,"price":99.99,"currency_code":"USD","in_stock":true},{"title":"10x24x1","offer_id":44114859393146,"sku":null,"price":123.99,"currency_code":"USD","in_stock":true},{"title":"12x12x1","offer_id":44114859425914,"sku":null,"price":99.99,"currency_code":"USD","in_stock":true},{"title":"12x20x1","offer_id":44114859458682,"sku":null,"price":100.99,"currency_code":"USD","in_stock":true},{"title":"12x24x1","offer_id":44114859491450,"sku":null,"price":100.99,"currency_code":"USD","in_stock":true},{"title":"12x25x1","offer_id":44114859524218,"sku":null,"price":100.99,"currency_code":"USD","in_stock":true},{"title":"12x30x1","offer_id":44114859556986,"sku":null,"price":121.99,"currency_code":"USD","in_stock":true},{"title":"14x14x1","offer_id":44114859589754,"sku":null,"price":99.99,"currency_code":"USD","in_stock":true},{"title":"14x20x1","offer_id":44114859622522,"sku":null,"price":100.99,"currency_code":"USD","in_stock":true},{"title":"14x24x1","offer_id":44114859655290,"sku":null,"price":100.99,"currency_code":"USD","in_stock":true},{"title":"14x25x1","offer_id":44114859688058,"sku":null,"price":100.99,"currency_code":"USD","in_stock":true},{"title":"14x30x1","offer_id":44114859720826,"sku":null,"price":111.99,"currency_code":"USD","in_stock":true},{"title":"15x20x1","offer_id":44114859753594,"sku":null,"price":99.99,"currency_code":"USD","in_stock":true},{"title":"16x16x1","offer_id":44114859786362,"sku":null,"price":99.99,"currency_code":"USD","in_stock":true},{"title":"16x20x1","offer_id":44114859819130,"sku":null,"price":100.99,"currency_code":"USD","in_stock":true},{"title":"16-1\/2x21-1\/2x1","offer_id":44114859851898,"sku":null,"price":137.99,"currency_code":"USD","in_stock":true},{"title":"16x24x1","offer_id":44114859884666,"sku":null,"price":100.99,"currency_code":"USD","in_stock":true},{"title":"16x25x1","offer_id":44114859917434,"sku":null,"price":100.99,"currency_code":"USD","in_stock":true},{"title":"16x30x1","offer_id":44114859950202,"sku":null,"price":100.99,"currency_code":"USD","in_stock":true},{"title":"18x18x1","offer_id":44114859982970,"sku":null,"price":100.99,"currency_code":"USD","in_stock":true},{"title":"18x20x1","offer_id":44114860015738,"sku":null,"price":100.99,"currency_code":"USD","in_stock":true},{"title":"18x24x1","offer_id":44114860048506,"sku":null,"price":100.99,"currency_code":"USD","in_stock":true},{"title":"18x25x1","offer_id":44114860081274,"sku":null,"price":100.99,"currency_code":"USD","in_stock":true},{"title":"20x20x1","offer_id":44114860114042,"sku":null,"price":100.99,"currency_code":"USD","in_stock":true},{"title":"20x24x1","offer_id":44114860146810,"sku":null,"price":100.99,"currency_code":"USD","in_stock":true},{"title":"20x25x1","offer_id":44114860179578,"sku":null,"price":101.99,"currency_code":"USD","in_stock":true},{"title":"20x30x1","offer_id":44114860212346,"sku":null,"price":101.99,"currency_code":"USD","in_stock":true},{"title":"22x22x1","offer_id":44114860245114,"sku":null,"price":130.99,"currency_code":"USD","in_stock":true},{"title":"24x24x1","offer_id":44114860277882,"sku":null,"price":119.99,"currency_code":"USD","in_stock":true},{"title":"24x30x1","offer_id":44114860310650,"sku":null,"price":135.99,"currency_code":"USD","in_stock":true},{"title":"25x25x1","offer_id":44114860343418,"sku":null,"price":125.99,"currency_code":"USD","in_stock":true},{"title":"10x20x2","offer_id":44114860376186,"sku":null,"price":215.99,"currency_code":"USD","in_stock":true},{"title":"12x20x2","offer_id":44114860408954,"sku":null,"price":214.99,"currency_code":"USD","in_stock":true},{"title":"12x24x2","offer_id":44114860441722,"sku":null,"price":211.99,"currency_code":"USD","in_stock":true},{"title":"14x20x2","offer_id":44114860474490,"sku":null,"price":210.99,"currency_code":"USD","in_stock":true},{"title":"14x25x2","offer_id":44114860507258,"sku":null,"price":211.99,"currency_code":"USD","in_stock":true},{"title":"15x20x2","offer_id":44114860540026,"sku":null,"price":210.99,"currency_code":"USD","in_stock":true},{"title":"16x16x2","offer_id":44114860572794,"sku":null,"price":219.99,"currency_code":"USD","in_stock":true},{"title":"16x20x2","offer_id":44114860605562,"sku":null,"price":210.99,"currency_code":"USD","in_stock":true},{"title":"16x24x2","offer_id":44114860638330,"sku":null,"price":215.99,"currency_code":"USD","in_stock":true},{"title":"16x25x2","offer_id":44114860671098,"sku":null,"price":215.99,"currency_code":"USD","in_stock":true},{"title":"16x30x2","offer_id":44114860703866,"sku":null,"price":255.99,"currency_code":"USD","in_stock":true},{"title":"18x20x2","offer_id":44114860736634,"sku":null,"price":215.99,"currency_code":"USD","in_stock":true},{"title":"18x24x2","offer_id":44114860769402,"sku":null,"price":217.99,"currency_code":"USD","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Essential MERV 8 Pleated Air Filters (12 Pack)","description":"\u003cp\u003eThe PrimeShield Essential MERV 8 pleated filter is the residential and light-commercial HVAC standard — captures 75% of large airborne particles, fits virtually every system without airflow loss, and comes in a 12-pack that'll last most homes a full year. If you don't know what MERV to buy and just want a reliable pleated filter that every HVAC technician would sign off on, this is it.\u003c\/p\u003e\n\n\u003ch2\u003eWhy MERV 8 Is the Residential Standard\u003c\/h2\u003e\n\u003cp\u003eMERV 8 is the minimum pleated filter rating most HVAC manufacturers recommend for their equipment. It captures dust, pollen, lint, mold spores, dust mite debris, and hair spray residue without restricting airflow enough to stress your blower. For most homes — no pets, no severe allergies, no wildfire smoke concerns — MERV 8 is the right answer.\u003c\/p\u003e\n\n\u003ch2\u003eKey Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e75% particle capture\u003c\/strong\u003e on large airborne particles (3–10 micron range)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow pressure drop\u003c\/strong\u003e — safe for virtually every forced-air HVAC system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e90-day service life\u003c\/strong\u003e — three filter changes per year per system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase pricing\u003c\/strong\u003e — 12 filters covers most homes for a full year\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUL 900 and ULC-S111-07 compliant\u003c\/strong\u003e — rated for continuous operation up to 200°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho This Is For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHomeowners\u003c\/strong\u003e who want reliable filtration without the pressure drop of higher MERV ratings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProperty managers\u003c\/strong\u003e standardizing pleated filters across a portfolio\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOffice buildings \u0026amp; light-commercial\u003c\/strong\u003e — meets ASHRAE 62.1 baseline for many commercial spaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFacilities teams\u003c\/strong\u003e buying case quantities for routine maintenance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnyone upgrading from fiberglass\u003c\/strong\u003e without changing their HVAC's airflow characteristics\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhen to Step Up\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePets or mild allergies?\u003c\/strong\u003e Consider \u003ca href=\"\/products\/merv-10-pleated-air-filters-12-pack\"\u003eMERV 10\u003c\/a\u003e for pet dander and finer particle capture\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple pets or industrial exposure?\u003c\/strong\u003e \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003eMERV 11\u003c\/a\u003e captures 60–65% of 1-micron particles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWildfire smoke, asthma, or healthcare?\u003c\/strong\u003e \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003eMERV 13\u003c\/a\u003e delivers hospital-grade filtration\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuild Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Specialized synthetic fiber blend engineered for high efficiency and low pressure drop\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Moisture-resistant beverage board frame, double-wall construction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupport grid:\u003c\/strong\u003e Expanded galvanized steel for pleat stability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaptures:\u003c\/strong\u003e Dust, lint, pollen, mold spores, dust mite debris, hair spray residue, and some bacteria\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLife:\u003c\/strong\u003e Recommended 90-day changeout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 12 filters per pack\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompliance:\u003c\/strong\u003e UL 900, ULC-S111-07\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eDon't See Your Size?\u003c\/h2\u003e\n\u003cp\u003eWe cut \u003ca href=\"\/collections\/custom-filters\"\u003ecustom MERV 8 filters\u003c\/a\u003e to 1\/8\" precision. Perfect for older systems, non-standard filter racks, and commercial AHUs.\u003c\/p\u003e\n\n\u003ch2\u003eFilter Fit Guarantee\u003c\/h2\u003e\n\u003cp\u003eIf a filter doesn't fit your system as expected, we'll make it right. Questions before you order? Take our \u003ca href=\"\/pages\/merv-quiz\"\u003eMERV Rating Quiz\u003c\/a\u003e or call \u003cstrong\u003e1-866-469-8556\u003c\/strong\u003e — real humans who've been doing this since 2006.\u003c\/p\u003e\n\n\u003ch3\u003eManufacturing Notes\u003c\/h3\u003e\n\u003cp\u003e\u003cem\u003ePrimeShield Essential filters are produced to our proprietary PrimeShield specifications by one or more partner manufacturers. Part numbers may vary by production run, but every filter meets identical specifications: synthetic fiber blend media, moisture-resistant beverage board frame, expanded galvanized steel support grid, UL 900 and ULC-S111-07 compliant, continuous operation rated to 200°F. Size and performance are consistent across all production runs.\u003c\/em\u003e\u003c\/p\u003e","brand":"RTF","offers":[{"title":"10x10x1","offer_id":44114860998778,"sku":"102-041-020","price":99.99,"currency_code":"USD","in_stock":true},{"title":"10x20x1","offer_id":44114861031546,"sku":"102-700-001","price":99.99,"currency_code":"USD","in_stock":true},{"title":"12x12x1","offer_id":44114861064314,"sku":"102-700-051","price":99.99,"currency_code":"USD","in_stock":true},{"title":"12x16x1","offer_id":44114861097082,"sku":"P8S1-120-160","price":111.99,"currency_code":"USD","in_stock":true},{"title":"12x18x1","offer_id":44114861129850,"sku":"P8S1-120-180","price":131.99,"currency_code":"USD","in_stock":true},{"title":"12x20x1","offer_id":44114861162618,"sku":"102-041-002","price":100.99,"currency_code":"USD","in_stock":true},{"title":"12x24x1","offer_id":44114861195386,"sku":"102-700-002","price":100.99,"currency_code":"USD","in_stock":true},{"title":"12x25x1","offer_id":44114861228154,"sku":"102-041-003","price":100.99,"currency_code":"USD","in_stock":true},{"title":"14x20x1","offer_id":44114861260922,"sku":"102-700-003","price":100.99,"currency_code":"USD","in_stock":true},{"title":"14x24x1","offer_id":44114861293690,"sku":"102-041-005","price":100.99,"currency_code":"USD","in_stock":true},{"title":"14x25x1","offer_id":44114861326458,"sku":"102-700-004","price":100.99,"currency_code":"USD","in_stock":true},{"title":"14x30x1","offer_id":44114861359226,"sku":"102-041-039","price":111.99,"currency_code":"USD","in_stock":true},{"title":"15x18x1","offer_id":44114861391994,"sku":"P8S1-150-180","price":131.99,"currency_code":"USD","in_stock":true},{"title":"15x20x1","offer_id":44114861424762,"sku":"102-700-005","price":99.99,"currency_code":"USD","in_stock":true},{"title":"15x21x1","offer_id":44114861457530,"sku":"P8S1-150-210","price":167.99,"currency_code":"USD","in_stock":true},{"title":"15x25x1","offer_id":44114861490298,"sku":"102-041-006","price":99.99,"currency_code":"USD","in_stock":true},{"title":"16x16x1","offer_id":44114861523066,"sku":"102-041-007","price":99.99,"currency_code":"USD","in_stock":true},{"title":"16x20x1","offer_id":44114861555834,"sku":"102-700-006","price":100.99,"currency_code":"USD","in_stock":true},{"title":"16x24x1","offer_id":44114861588602,"sku":"102-041-008","price":100.99,"currency_code":"USD","in_stock":true},{"title":"16x25x1","offer_id":44114861621370,"sku":"102-700-007","price":100.99,"currency_code":"USD","in_stock":true},{"title":"16x30x1","offer_id":44114861654138,"sku":"102-041-018","price":124.99,"currency_code":"USD","in_stock":true},{"title":"18x18x1","offer_id":44114861686906,"sku":"102-041-009","price":100.99,"currency_code":"USD","in_stock":true},{"title":"18x20x1","offer_id":44114861719674,"sku":"102-041-015","price":100.99,"currency_code":"USD","in_stock":true},{"title":"18x24x1","offer_id":44114861752442,"sku":"102-041-016","price":100.99,"currency_code":"USD","in_stock":true},{"title":"18x25x1","offer_id":44114861785210,"sku":"102-041-011","price":100.99,"currency_code":"USD","in_stock":true},{"title":"18x30x1","offer_id":44114861817978,"sku":"102-041-044","price":154.99,"currency_code":"USD","in_stock":true},{"title":"20x20x1","offer_id":44114861850746,"sku":"102-700-008","price":100.99,"currency_code":"USD","in_stock":true},{"title":"20x22x1","offer_id":44114861883514,"sku":"102-041-049","price":100.99,"currency_code":"USD","in_stock":true},{"title":"20x24x1","offer_id":44114861916282,"sku":"102-041-017","price":100.99,"currency_code":"USD","in_stock":true},{"title":"20x25x1","offer_id":44114861949050,"sku":"102-700-009","price":101.99,"currency_code":"USD","in_stock":true},{"title":"20x30x1","offer_id":44114861981818,"sku":"102-041-012","price":149.99,"currency_code":"USD","in_stock":true},{"title":"24x24x1","offer_id":44114862014586,"sku":"102-700-010","price":119.99,"currency_code":"USD","in_stock":true},{"title":"24x30x1","offer_id":44114862047354,"sku":"102-041-013","price":135.99,"currency_code":"USD","in_stock":true},{"title":"25x25x1","offer_id":44114862080122,"sku":"102-041-014","price":125.99,"currency_code":"USD","in_stock":true},{"title":"10x20x2","offer_id":44114862112890,"sku":"102-700-011","price":215.99,"currency_code":"USD","in_stock":true},{"title":"12x12x2","offer_id":44114862145658,"sku":"102-042-035","price":214.99,"currency_code":"USD","in_stock":true},{"title":"12x20x2","offer_id":44114862178426,"sku":"102-042-002","price":219.99,"currency_code":"USD","in_stock":true},{"title":"12x24x2","offer_id":44114862211194,"sku":"102-700-012","price":211.99,"currency_code":"USD","in_stock":true},{"title":"12x25x2","offer_id":44114862243962,"sku":"102-042-003","price":211.99,"currency_code":"USD","in_stock":true},{"title":"14x20x2","offer_id":44114862276730,"sku":"102-700-013","price":210.99,"currency_code":"USD","in_stock":true},{"title":"14x25x2","offer_id":44114862309498,"sku":"102-700-014","price":206.99,"currency_code":"USD","in_stock":true},{"title":"14x30x2","offer_id":44114862342266,"sku":"102-042-0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Advanced MERV 11 Pleated Air Filters (12 Pack)","description":"\u003cp\u003eThe PrimeShield Advanced MERV 11 pleated filter is the upgrade most allergy sufferers, multi-pet households, and IAQ-focused facilities actually need — 60–65% capture efficiency at 1 micron, 2-3× the fine particle capture of MERV 8, and still a low enough pressure drop (0.34\" w.g. at 2000 CFM) to work in most residential and commercial systems. If MERV 8 isn't cutting it but MERV 13's pressure drop worries you, MERV 11 is the answer.\u003c\/p\u003e\n\n\u003ch2\u003eWhat MERV 11 Captures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEverything MERV 10 catches\u003c\/strong\u003e, plus:\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eLead dust \u0026amp; fine industrial particulate\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMost pet dander — even small-breed and cat dander\u003c\/strong\u003e (particles below 2 microns)\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSome fine bacteria\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmoke particulate\u003c\/strong\u003e from cooking, candles, and light wildfire exposure\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhat it still doesn't catch: sub-micron virus carriers and dense wildfire smoke — those require \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003eMERV 13\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eKey Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e60–65% efficiency at 1 micron\u003c\/strong\u003e — 2-3× MERV 8's fine-particle performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.34\" w.g. pressure drop @ 2000 CFM\u003c\/strong\u003e — verified low-restriction performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrostatically charged V-Pleat media\u003c\/strong\u003e with gradient structure\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion-resistant metal backing\u003c\/strong\u003e — holds pleat shape as the filter loads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtends downstream filter life\u003c\/strong\u003e — acts as a protective pre-filter when paired with HEPA or MERV 13 final filtration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e90-day service life\u003c\/strong\u003e in typical residential use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho This Is For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHomes with multiple pets\u003c\/strong\u003e — captures the fine dander MERV 10 partially misses\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModerate to strong allergy sufferers\u003c\/strong\u003e — meaningful symptom relief for most\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHomes near industrial zones or heavy traffic\u003c\/strong\u003e — captures fine pollution particulate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOffices \u0026amp; light-commercial buildings\u003c\/strong\u003e pursuing above-baseline IAQ\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFacilities\u003c\/strong\u003e upgrading from MERV 8 without MERV 13's pressure-drop concerns\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-stage systems\u003c\/strong\u003e — excellent as a pre-filter protecting downstream HEPA\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eNot Ideal For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystems with known airflow constraints\u003c\/strong\u003e — verify your HVAC or AHU can handle the pressure drop before switching\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWildfire-prone regions or immunocompromised households\u003c\/strong\u003e — go \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003eMERV 13\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuild Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e 100% synthetic non-woven bi-component, recyclable, gradient density, electrostatically charged\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Heavy-duty two-piece moisture-resistant frame with diagonal supports, media bonded at all contact points\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupport grid:\u003c\/strong\u003e Expanded metal laminated to air-leaving side for pleat stability during operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaptures:\u003c\/strong\u003e Up to 90% of particles ≥1 micron including dust, lint, dust mite debris, pollen, pet dander, mold spores, lead dust, some bacteria\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure drop:\u003c\/strong\u003e 0.34\" w.g. at 2000 CFM (verified)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLife:\u003c\/strong\u003e Recommended 90-day changeout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 12 filters per pack\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eMERV 11 vs. the Competition\u003c\/h2\u003e\n\u003cp\u003eMERV 11 is roughly comparable to \u003cstrong\u003eFiltrete MPR 1500\u003c\/strong\u003e and \u003cstrong\u003eFPR 10\u003c\/strong\u003e on competing brand scales. Same capture performance, typically at better case pricing.\u003c\/p\u003e\n\n\u003ch2\u003eDon't See Your Size?\u003c\/h2\u003e\n\u003cp\u003eWe cut \u003ca href=\"\/collections\/custom-filters\"\u003ecustom MERV 11 filters\u003c\/a\u003e to 1\/8\" precision — perfect for light-commercial AHUs and older residential systems with non-standard dimensions.\u003c\/p\u003e\n\n\u003ch2\u003eFilter Fit Guarantee\u003c\/h2\u003e\n\u003cp\u003eIf a filter doesn't fit your system as expected, we'll make it right. Not sure if MERV 11 or MERV 13 is right for you? Take our \u003ca href=\"\/pages\/merv-quiz\"\u003eMERV Rating Quiz\u003c\/a\u003e or call \u003cstrong\u003e1-866-469-8556\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eManufacturing Notes\u003c\/h3\u003e\n\u003cp\u003e\u003cem\u003ePrimeShield Advanced filters are produced to our proprietary PrimeShield specifications by one or more partner manufacturers. Part numbers may vary by production run, but every filter meets identical specifications: 100% synthetic non-woven bi-component recyclable media, electrostatically charged with gradient density, heavy-duty two-piece moisture-resistant frame with diagonal supports, expanded metal support grid, 0.34\" w.g. pressure drop at 2000 CFM. Size and performance are consistent across all production runs.\u003c\/em\u003e\u003c\/p\u003e","brand":"RTF","offers":[{"title":"10x10x1","offer_id":44114862964858,"sku":"85655 M11-011010","price":133.99,"currency_code":"USD","in_stock":true},{"title":"10x20x1","offer_id":44114862997626,"sku":"85655 M11-011020","price":137.99,"currency_code":"USD","in_stock":true},{"title":"12x20x1","offer_id":44114863030394,"sku":"85655 M11-011220","price":119.99,"currency_code":"USD","in_stock":true},{"title":"12x24x1","offer_id":44114863063162,"sku":"85655 M11-011224","price":119.99,"currency_code":"USD","in_stock":true},{"title":"14x20x1","offer_id":44114863095930,"sku":"85655 M11-011420","price":134.99,"currency_code":"USD","in_stock":true},{"title":"14x25x1","offer_id":44114863128698,"sku":"85655 M11-011425","price":140.99,"currency_code":"USD","in_stock":true},{"title":"15x20x1","offer_id":44114863161466,"sku":"85655 M11-011520","price":119.99,"currency_code":"USD","in_stock":true},{"title":"16x20x1","offer_id":44114863194234,"sku":"85655 M11-011620","price":139.99,"currency_code":"USD","in_stock":true},{"title":"16x25x1","offer_id":44114863227002,"sku":"85655 M11-011625","price":140.99,"currency_code":"USD","in_stock":true},{"title":"18x24x1","offer_id":44114863259770,"sku":"85655 M11-011824","price":154.99,"currency_code":"USD","in_stock":true},{"title":"18x25x1","offer_id":44114863292538,"sku":"85655 M11-011825","price":147.99,"currency_code":"USD","in_stock":true},{"title":"20x20x1","offer_id":44114863325306,"sku":"85655 M11-012020","price":140.99,"currency_code":"USD","in_stock":true},{"title":"20x24x1","offer_id":44114863358074,"sku":"85655 M11-012024","price":148.99,"currency_code":"USD","in_stock":true},{"title":"20x25x1","offer_id":44114863390842,"sku":"85655 M11-012025","price":142.99,"currency_code":"USD","in_stock":true},{"title":"20x30x1","offer_id":44114863423610,"sku":"85655 M11-012030","price":148.99,"currency_code":"USD","in_stock":true},{"title":"24x24x1","offer_id":44114863456378,"sku":"85655 M11-012424","price":145.99,"currency_code":"USD","in_stock":true},{"title":"25x25x1","offer_id":44114863489146,"sku":"85655 M11-012525","price":143.99,"currency_code":"USD","in_stock":true},{"title":"10x20x2","offer_id":44114863521914,"sku":"85655 M11-021020","price":215.99,"currency_code":"USD","in_stock":true},{"title":"12x20x2","offer_id":44114863554682,"sku":"85655 M11-021220","price":254.99,"currency_code":"USD","in_stock":true},{"title":"12x24x2","offer_id":44114863587450,"sku":"85655 M11-021224","price":219.99,"currency_code":"USD","in_stock":true},{"title":"14x20x2","offer_id":44114863620218,"sku":"85655 M11-021420","price":243.99,"currency_code":"USD","in_stock":true},{"title":"14x25x2","offer_id":44114863652986,"sku":"85655 M11-021425","price":243.99,"currency_code":"USD","in_stock":true},{"title":"15x20x2","offer_id":44114863685754,"sku":"85655 M11-021520","price":219.99,"currency_code":"USD","in_stock":true},{"title":"16x20x2","offer_id":44114863718522,"sku":"85655 M11-021620","price":243.99,"currency_code":"USD","in_stock":true},{"title":"16x24x2","offer_id":44114863751290,"sku":"85655 M11-021624","price":249.99,"currency_code":"USD","in_stock":true},{"title":"16x25x2","offer_id":44114863784058,"sku":"85655 M11-021625","price":243.99,"currency_code":"USD","in_stock":true},{"title":"18x24x2","offer_id":44114863816826,"sku":"85655 M11-021824","price":244.99,"currency_code":"USD","in_stock":true},{"title":"18x25x2","offer_id":44114863849594,"sku":"85655 M11-021825","price":244.99,"currency_code":"USD","in_stock":true},{"title":"20x20x2","offer_id":44114863882362,"sku":"85655 M11-022020","price":243.99,"currency_code":"USD","in_stock":true},{"title":"20x24x2","offer_id":44114863915130,"sku":"85655 M11-022024","price":243.99,"currency_code":"USD","in_stock":true},{"title":"20x25x2","offer_id":44114863947898,"sku":"85655 M11-022025","price":244.99,"currency_code":"USD","in_stock":true},{"title":"24x24x2","offer_id":44114863980666,"sku":"85655 M11-022424","price":244.99,"currency_code":"USD","in_stock":true},{"title":"25x25x2","offer_id":44114864013434,"sku":"85655 M11-022525","price":273.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/primemerv11.jpg?v=1772911473"},{"product_id":"merv-13-pleated-air-filters-12-pack","title":"PrimeShield Elite MERV 13 Pleated Air Filters (12 Pack)","description":"\u003cp\u003eThe PrimeShield Elite MERV 13 pleated filter is the top-tier HVAC filter we stock for non-HEPA applications — up to 95% capture efficiency down to 0.3 microns, including smoke, bacteria, virus carriers, and the finest airborne allergens. ASHRAE and the CDC both recommend MERV 13 wherever the HVAC system can support it. If you live in a wildfire region, have asthma, manage a healthcare or institutional facility, or simply want the best non-HEPA filtration available, this is your filter.\u003c\/p\u003e\n\n\u003ch2\u003eWhat MERV 13 Captures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHospital-grade filtration\u003c\/strong\u003e — ASHRAE 170 healthcare ventilation spec\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmoke and wildfire particulate\u003c\/strong\u003e — the reason MERV 13 sees surge demand every fire season\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBacteria and virus carriers\u003c\/strong\u003e — though individual virus particles still require HEPA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFine dust and most airborne allergens\u003c\/strong\u003e — pollen, pet dander, dust mite debris, mold spores\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSub-micron particulate down to 0.3 microns\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKey Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e95% capture efficiency\u003c\/strong\u003e across the full particulate spectrum MERV 13 is rated for\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eV-Pleat media with diamond-shaped metal support\u003c\/strong\u003e — optimizes airflow even at this efficiency level\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerified low resistance\u003c\/strong\u003e — 0.20\" w.g. at 375 FPM, 0.30\" w.g. at 500 FPM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-duty double-wall frame with diagonal supports\u003c\/strong\u003e — won't flex or deform\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtends downstream filter life\u003c\/strong\u003e — often used as a pre-filter for HEPA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% recyclable synthetic media\u003c\/strong\u003e — moisture-resistant frame\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho This Is For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWildfire-prone regions\u003c\/strong\u003e — MERV 13 is the filter you want on smoke days\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHealthcare facilities\u003c\/strong\u003e — meets ASHRAE 170 requirements for clinical spaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSchools \u0026amp; institutional buildings\u003c\/strong\u003e — recommended by ASHRAE and CDC for occupied spaces\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eImmunocompromised households or facilities\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSevere allergies or asthma sufferers\u003c\/strong\u003e — the step-change in symptom relief\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHomes with wood-burning stoves, heavy cooking, or high outdoor pollution\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBefore You Buy — Verify Your System Can Handle It\u003c\/h2\u003e\n\u003cp\u003eMERV 13 has a higher pressure drop than lower ratings. Most modern HVAC systems (post-2010) handle it without issues, but older systems with small blower motors or tight static-pressure budgets may need to stay at MERV 11. Commercial AHUs should be verified against design static pressure. If unsure, check with your HVAC contractor — or call us at \u003cstrong\u003e1-866-469-8556\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eBuild Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e 100% synthetic non-woven, recyclable, gradient density, mechanical capture (no electrostatic charge)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Heavy-duty two-piece moisture-resistant double-wall frame with diagonal supports, media bonded at all contact points\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupport grid:\u003c\/strong\u003e Diamond-shaped expanded metal laminated to air-leaving side\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaptures:\u003c\/strong\u003e Up to 95% of airborne particles including fine dust, lint, dust mite debris, pollen, pet dander, mold spores, bacteria, smoke, virus carriers, sub-micron particulate down to 0.3 microns\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure drop:\u003c\/strong\u003e 0.20\" w.g. at 375 FPM, 0.30\" w.g. at 500 FPM (verified)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLife:\u003c\/strong\u003e Recommended 90-day changeout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 12 filters per pack\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eMERV 13 vs. the Competition\u003c\/h2\u003e\n\u003cp\u003eMERV 13 is roughly comparable to \u003cstrong\u003eFiltrete MPR 1900\u003c\/strong\u003e (Smart Premium Allergen) and \u003cstrong\u003eFPR 10\u003c\/strong\u003e. Same capture performance, typically at better case pricing — and with verified technical specs that Filtrete marketing numbers don't disclose.\u003c\/p\u003e\n\n\u003ch2\u003eDon't See Your Size?\u003c\/h2\u003e\n\u003cp\u003eWe cut \u003ca href=\"\/collections\/custom-filters\"\u003ecustom MERV 13 filters\u003c\/a\u003e to 1\/8\" precision — perfect for clinical spaces, schools, and commercial AHUs with non-standard dimensions.\u003c\/p\u003e\n\n\u003ch2\u003eFilter Fit Guarantee\u003c\/h2\u003e\n\u003cp\u003eIf a filter doesn't fit your system as expected, we'll make it right. Questions about whether MERV 13 is right for your HVAC system? Call \u003cstrong\u003e1-866-469-8556\u003c\/strong\u003e — 50+ years of combined HVAC experience on our team.\u003c\/p\u003e\n\n\u003ch3\u003eManufacturing Notes\u003c\/h3\u003e\n\u003cp\u003e\u003cem\u003ePrimeShield Elite filters are produced to our proprietary PrimeShield specifications by one or more partner manufacturers. Part numbers may vary by production run, but every filter meets identical specifications: 100% synthetic non-woven recyclable media with gradient density, mechanical (non-electrostatic) particle capture, heavy-duty double-wall moisture-resistant frame with diagonal supports, diamond-shaped expanded metal support grid, verified 0.20\" w.g. pressure drop at 375 FPM and 0.30\" at 500 FPM. Size and performance are consistent across all production runs.\u003c\/em\u003e\u003c\/p\u003e","brand":"RTF","offers":[{"title":"10x20x1","offer_id":44114864046202,"sku":"90013-011020","price":187.99,"currency_code":"USD","in_stock":true},{"title":"12x20x1","offer_id":44114864078970,"sku":"90013-011220","price":192.99,"currency_code":"USD","in_stock":true},{"title":"12x24x1","offer_id":44114864111738,"sku":"90013-011224","price":188.99,"currency_code":"USD","in_stock":true},{"title":"14x20x1","offer_id":44114864144506,"sku":"90013-011420","price":187.99,"currency_code":"USD","in_stock":true},{"title":"14x25x1","offer_id":44114864177274,"sku":"90013-011425","price":188.99,"currency_code":"USD","in_stock":true},{"title":"15x20x1","offer_id":44114864210042,"sku":"90013-011520","price":197.99,"currency_code":"USD","in_stock":true},{"title":"16x20x1","offer_id":44114864242810,"sku":"90013-011620","price":188.99,"currency_code":"USD","in_stock":true},{"title":"16x24x1","offer_id":44114864275578,"sku":"90013-011624","price":192.99,"currency_code":"USD","in_stock":true},{"title":"16x25x1","offer_id":44114864308346,"sku":"90013-011625","price":188.99,"currency_code":"USD","in_stock":true},{"title":"18x20x1","offer_id":44114864341114,"sku":"90013-011820","price":225.99,"currency_code":"USD","in_stock":true},{"title":"18x24x1","offer_id":44114864373882,"sku":"90013-011824","price":190.99,"currency_code":"USD","in_stock":true},{"title":"18x25x1","offer_id":44114864406650,"sku":"90013-011825","price":188.99,"currency_code":"USD","in_stock":true},{"title":"20x20x1","offer_id":44114864439418,"sku":"90013-012020","price":190.99,"currency_code":"USD","in_stock":true},{"title":"20x24x1","offer_id":44114864472186,"sku":"90013-012024","price":191.99,"currency_code":"USD","in_stock":true},{"title":"20x25x1","offer_id":44114864504954,"sku":"90013-012025","price":191.99,"currency_code":"USD","in_stock":true},{"title":"24x24x1","offer_id":44114864537722,"sku":"90013-012424","price":210.99,"currency_code":"USD","in_stock":true},{"title":"25x25x1","offer_id":44114864570490,"sku":"90013-012525","price":248.99,"currency_code":"USD","in_stock":true},{"title":"10x20x2","offer_id":44114864603258,"sku":null,"price":191.99,"currency_code":"USD","in_stock":true},{"title":"12x20x2","offer_id":44114864636026,"sku":"90013-021220","price":274.99,"currency_code":"USD","in_stock":true},{"title":"12x24x2","offer_id":44114864668794,"sku":"90013-021224","price":289.99,"currency_code":"USD","in_stock":true},{"title":"14x20x2","offer_id":44114864701562,"sku":"90013-021420","price":291.99,"currency_code":"USD","in_stock":true},{"title":"14x25x2","offer_id":44114864734330,"sku":"90013-021425","price":293.99,"currency_code":"USD","in_stock":true},{"title":"15x20x2","offer_id":44114864767098,"sku":"90013-021520","price":293.99,"currency_code":"USD","in_stock":true},{"title":"16x20x2","offer_id":44114864799866,"sku":"90013-021620","price":294.99,"currency_code":"USD","in_stock":true},{"title":"16x24x2","offer_id":44114864832634,"sku":"90013-021624","price":305.99,"currency_code":"USD","in_stock":true},{"title":"16x25x2","offer_id":44114864865402,"sku":"90013-021625","price":296.99,"currency_code":"USD","in_stock":true},{"title":"18x20x2","offer_id":44114864898170,"sku":"90013-021820","price":297.99,"currency_code":"USD","in_stock":true},{"title":"18x24x2","offer_id":44114864930938,"sku":"90013-021824","price":301.99,"currency_code":"USD","in_stock":true},{"title":"18x25x2","offer_id":44114864963706,"sku":"90013-021825","price":336.99,"currency_code":"USD","in_stock":true},{"title":"20x20x2","offer_id":44114864996474,"sku":"90013-022020","price":307.99,"currency_code":"USD","in_stock":true},{"title":"20x24x2","offer_id":44114865029242,"sku":"90013-022024","price":356.99,"currency_code":"USD","in_stock":true},{"title":"20x25x2","offer_id":44114865062010,"sku":"90013-022025","price":358.99,"currency_code":"USD","in_stock":true},{"title":"24x24x2","offer_id":44114865094778,"sku":"90013-022424","price":360.99,"currency_code":"USD","in_stock":true},{"title":"25x25x2","offer_id":44114865127546,"sku":"90013-022525","price":411.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/primemerv13.jpg?v=1772911375"},{"product_id":"merv-1-4-fiberglass-panel-basic-air-filters-12-pack","title":"PrimeShield MAX Airflow MERV 1-4 Fiberglass Panel Basic Air Filters (12 Pack)","description":"\u003cp\u003eThe PrimeShield MAX Airflow fiberglass panel filter is our most affordable option — a commercial-grade disposable built for one job: protect your HVAC equipment from large debris without restricting airflow. If you manage a rental portfolio, stock backup filters for a facility, or swap filters monthly and want the lowest per-filter cost, this is the pack for you.\u003c\/p\u003e\n\n\u003ch2\u003eWhat This Filter Is (and Isn't)\u003c\/h2\u003e\n\u003cp\u003eMERV 1-4 fiberglass captures large particulate — dust, lint, carpet fibers, hair, and insects — keeping your blower motor, coil, and ductwork clean. It's built for \u003cstrong\u003eequipment protection\u003c\/strong\u003e, not air quality improvement. If you need to capture pet dander, pollen, mold spores, or smoke, step up to a pleated filter at \u003ca href=\"\/products\/merv-8-pleated-air-filters-12-pack\"\u003eMERV 8\u003c\/a\u003e or higher.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buyers Choose MERV 1-4\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLowest cost per filter\u003c\/strong\u003e — case pricing on 12 filters in your chosen size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHighest airflow\u003c\/strong\u003e — minimal pressure drop, ideal for older systems with smaller blowers or systems that can't handle pleated media resistance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e30-day changeout cycle\u003c\/strong\u003e — the \"cheap and frequent\" approach that some HVAC techs actually prefer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRental-property friendly\u003c\/strong\u003e — affordable enough to swap on every turnover\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-filter role\u003c\/strong\u003e — works as an upstream pre-filter in systems with a high-MERV final filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho This Is For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProperty managers\u003c\/strong\u003e standardizing on the lowest-cost option across rental units\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLandlords \u0026amp; second-home owners\u003c\/strong\u003e keeping a year's supply on hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFacilities teams\u003c\/strong\u003e buying pre-filters by the case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHVAC contractors\u003c\/strong\u003e doing service-call swaps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHomeowners\u003c\/strong\u003e with systems where airflow is the primary concern (older blowers, long duct runs)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuild Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e High-loft, skin-backed fiberglass with progressive density\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e One-piece moisture-resistant kraft board with interlocking corners\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinal resistance:\u003c\/strong\u003e 0.50\" W.G.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated velocity:\u003c\/strong\u003e 300 FPM\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eUL Standard 900 classified\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 200°F (93°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTolerance:\u003c\/strong\u003e ±1\/8\" height\/width, ±1\/16\" depth\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChangeout:\u003c\/strong\u003e Recommended every 30 days\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 12 filters per pack\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eDon't See Your Size?\u003c\/h2\u003e\n\u003cp\u003eWe cut \u003ca href=\"\/collections\/custom-filters\"\u003ecustom sizes\u003c\/a\u003e to 1\/8\" precision. Measure your filter rack and we'll build to your exact specification.\u003c\/p\u003e\n\n\u003ch2\u003eFilter Fit Guarantee\u003c\/h2\u003e\n\u003cp\u003eIf a filter doesn't fit your system as expected, we'll make it right. Questions before you order? Call \u003cstrong\u003e1-866-469-8556\u003c\/strong\u003e — we've been helping customers pick the right filter since 2006.\u003c\/p\u003e\n\n\u003ch3\u003eManufacturing Notes\u003c\/h3\u003e\n\u003cp\u003e\u003cem\u003ePrimeShield MAX Airflow filters are produced to our proprietary PrimeShield specifications by one or more partner manufacturers. Part numbers may vary by production run, but every filter meets identical specifications: high-loft skin-backed fiberglass media, single-piece kraft board frame, 0.50\" W.G. final resistance, 300 FPM rated velocity, UL 900 classification, 200°F max operating temperature, and ±1\/8\" height\/width \/ ±1\/16\" depth tolerances. 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