{"title":"Best-Selling HVAC Filters | Most-Ordered Sizes \u0026 MERV","description":"","products":[{"product_id":"flanders-precisionaire-ez-flow-ii-filters-12-pack","title":"Flanders EZ Flow Fiberglass MERV 1-4 Filter (12 Filters)","description":"\u003cp\u003eThe \u003cstrong\u003eFlanders EZ Flow\u003c\/strong\u003e spun-fiberglass panel filter 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\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 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Flanders PREpleat LPD MERV 10 Standard Capacity (12 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003eStandard 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 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\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. 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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\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? 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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 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Size NaturalAire Standard MERV 8 Air Filter","description":"\u003cp\u003eThe \u003cstrong\u003eNaturalAire Standard MERV 8\u003c\/strong\u003e pleated air filter is available in a \u003cstrong\u003ecustom-size\u003c\/strong\u003e configuration — built to your exact dimensions when stock nominal sizes don't fit your return-air housing or air handler.\u003c\/p\u003e\n\u003ch3\u003eWhen custom sizing makes sense\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFilter housings built to non-standard dimensions\u003c\/li\u003e\n  \u003cli\u003eOlder residential returns that don't match today's nominal sizes\u003c\/li\u003e\n  \u003cli\u003eCommercial air handlers with manufacturer-specific filter openings\u003c\/li\u003e\n  \u003cli\u003eReplacement for a filter you've been trimming to fit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIndividually sealed.\u003c\/strong\u003e Every NaturalAire filter ships individually wrapped inside the case — each filter protected from 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If you're unsure about measurements, \u003ca href=\"\/pages\/contact-us\"\u003econtact us\u003c\/a\u003e with a photo of your existing filter or housing and we'll confirm before production. Our \u003cstrong\u003eFilter Fit Guarantee\u003c\/strong\u003e means if you measure wrong, we'll remake the filter at no additional cost.\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\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":43449600704634,"sku":"C-84858","price":208.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/products\/naturalaire_standard_12pack_1200x_d48782a1-5034-409f-943c-98d46d76585f.webp?v=1673114435"},{"product_id":"custom-naturalaire-merv10-air-filters","title":"Custom Size NaturalAire Microparticle MERV 10 Air Filter","description":"\u003cp\u003eThe \u003cstrong\u003eNaturalAire Microparticle MERV 10\u003c\/strong\u003e pleated air filter is available in a \u003cstrong\u003ecustom-size\u003c\/strong\u003e configuration — built to your exact dimensions when stock nominal sizes don't fit your return-air housing or air handler.\u003c\/p\u003e\n\u003ch3\u003eWhen custom sizing makes sense\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFilter housings built to non-standard dimensions\u003c\/li\u003e\n  \u003cli\u003eOlder residential returns that don't match today's nominal sizes\u003c\/li\u003e\n  \u003cli\u003eCommercial air handlers with manufacturer-specific filter openings\u003c\/li\u003e\n  \u003cli\u003eReplacement for a filter you've been trimming to fit\u003c\/li\u003e\n\u003c\/ul\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.\u003c\/p\u003e\n\u003ch3\u003eHow to order\u003c\/h3\u003e\n\u003cp\u003eMeasure your existing filter to the nearest \u003cstrong\u003e1\/8 inch\u003c\/strong\u003e in length, width, and depth. If you're unsure about measurements, \u003ca href=\"\/pages\/contact-us\"\u003econtact us\u003c\/a\u003e with a photo of your existing filter or housing and we'll confirm before production. Our \u003cstrong\u003eFilter Fit Guarantee\u003c\/strong\u003e means if you measure wrong, we'll remake the filter at no additional cost.\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\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":33445886092,"sku":"85156","price":228.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/products\/naturalaire_microparticle_12pack_1200x_fedd9a0e-b719-4630-8719-86ee557f9f7b.webp?v=1673114708"},{"product_id":"custom-merv-13-air-filters","title":"Custom Size MERV 13 Pleated Air Filter","description":"\u003cp\u003eThis is our \u003cstrong\u003ecustom-size MERV 13 pleated air filter\u003c\/strong\u003e — built to your exact dimensions in any size you need, down to 1\/8 inch increments. When your HVAC system has a non-standard filter opening, stock nominal sizes leave gaps that let unfiltered air bypass the filter. Custom sizing closes that gap.\u003c\/p\u003e\n\u003ch3\u003eWhen a custom filter is the right call\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLegacy air handlers with non-standard filter openings\u003c\/li\u003e\n  \u003cli\u003eCommercial rooftop units with manufacturer-specific filter slots\u003c\/li\u003e\n  \u003cli\u003eResidential returns that don't match today's nominal sizes\u003c\/li\u003e\n  \u003cli\u003eReplacement for a filter you've been trimming or stacking to fit\u003c\/li\u003e\n  \u003cli\u003eBuilt-in filter housings where the air handler was designed around the filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 13 captures\u003c\/h3\u003e\n\u003cp\u003eVery fine particles including smoke, bacteria-sized particles, and virus carriers attached to larger droplets, on top of everything MERV 11 captures. Commonly specified for commercial spaces with higher indoor-air-quality requirements and for homes with wildfire smoke or air-quality concerns. Ensure your HVAC system is rated for the increased static pressure.\u003c\/p\u003e\n\u003ch3\u003eHow to order\u003c\/h3\u003e\n\u003cp\u003eMeasure your existing filter (not the housing it sits in — filters are typically slightly smaller than the housing for installation clearance) to the nearest \u003cstrong\u003e1\/8 inch\u003c\/strong\u003e in length, width, and depth. If you're unsure about measurements or which filter spec is right for your system, \u003ca href=\"\/pages\/contact-us\"\u003econtact us\u003c\/a\u003e with a photo of your existing filter or housing and we'll confirm before production. Our \u003cstrong\u003eFilter Fit Guarantee\u003c\/strong\u003e means if you measure wrong, we'll remake the filter at no additional cost.\u003c\/p\u003e\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Pleated synthetic MERV 13 media with mechanical capture\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Moisture-resistant beverage-board with wire-mesh media support\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e Available in 1-inch, 2-inch, and 4-inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSizing tolerance:\u003c\/strong\u003e 1\/8 inch increments\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-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":"RTF","offers":[{"title":"1\" Depth","offer_id":43451435647098,"sku":"90013.01","price":295.99,"currency_code":"USD","in_stock":true},{"title":"2\" Depth","offer_id":43451435679866,"sku":"90013.02","price":531.99,"currency_code":"USD","in_stock":true},{"title":"4\" Depth","offer_id":43597480099962,"sku":"90013.4","price":395.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/ExactM13.jpg?v=1749084749"},{"product_id":"naturalaire-microparticle-merv-13-filters-12-pack","title":"NaturalAire Healthy Ultra MERV 13 (12 Filters)","description":"\u003cp\u003eThe \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\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":36428990924,"sku":"95003-011020","price":218.99,"currency_code":"USD","in_stock":true},{"title":"12x12x1","offer_id":36428990988,"sku":"95003-011212","price":233.99,"currency_code":"USD","in_stock":true},{"title":"12x20x1","offer_id":36428991052,"sku":"95003-011220","price":250.99,"currency_code":"USD","in_stock":true},{"title":"12x24x1","offer_id":36428991116,"sku":"95003-011224","price":174.99,"currency_code":"USD","in_stock":true},{"title":"14x14x1","offer_id":36428991180,"sku":"95003-011414","price":178.99,"currency_code":"USD","in_stock":true},{"title":"14x20x1","offer_id":36428991244,"sku":"95003-011420","price":220.99,"currency_code":"USD","in_stock":true},{"title":"14x24x1","offer_id":36428991308,"sku":"95003-011424","price":248.99,"currency_code":"USD","in_stock":true},{"title":"14x25x1","offer_id":36428991436,"sku":"95003-011425","price":227.99,"currency_code":"USD","in_stock":true},{"title":"14x30x1","offer_id":36428991564,"sku":"95003-011430","price":213.99,"currency_code":"USD","in_stock":true},{"title":"15x20x1","offer_id":36428991692,"sku":"95003-011520","price":262.99,"currency_code":"USD","in_stock":true},{"title":"16x20x1","offer_id":36428991756,"sku":"95003-011620","price":224.99,"currency_code":"USD","in_stock":true},{"title":"16x25x1","offer_id":36428991884,"sku":"95003-011625","price":181.99,"currency_code":"USD","in_stock":true},{"title":"18x24x1","offer_id":36428992716,"sku":"95003-011824","price":221.99,"currency_code":"USD","in_stock":true},{"title":"20x20x1","offer_id":36428991948,"sku":"95003-012020","price":219.99,"currency_code":"USD","in_stock":true},{"title":"20x25x1","offer_id":36428992076,"sku":"95003-012025","price":176.99,"currency_code":"USD","in_stock":true},{"title":"20x30x1","offer_id":36428992204,"sku":"95003-012030","price":208.99,"currency_code":"USD","in_stock":true},{"title":"24x24x1","offer_id":36428992332,"sku":"95003-012424","price":238.99,"currency_code":"USD","in_stock":true},{"title":"20x24x1","offer_id":36428992460,"sku":"95003-012024","price":204.99,"currency_code":"USD","in_stock":true},{"title":"25x25x1","offer_id":36428992524,"sku":"95003-012525","price":209.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/products\/naturalaire_merv13_12pack.jpg?v=1666824176"},{"product_id":"aaf-flanders-nested-glass-ez-green-filters-24-filters","title":"Flanders Nested Glass EZ-Green Filter","description":"\u003cp\u003eThe \u003cstrong\u003eFlanders Nested Glass EZ-Green\u003c\/strong\u003e 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":"12x20x1","offer_id":44088996397178,"sku":"10059-011220","price":114.99,"currency_code":"USD","in_stock":true},{"title":"12x24x1","offer_id":44088996364410,"sku":"10059-011224","price":114.99,"currency_code":"USD","in_stock":true},{"title":"14x20x1","offer_id":44088996331642,"sku":"10059-011420","price":114.99,"currency_code":"USD","in_stock":true},{"title":"14x24x1","offer_id":44088996298874,"sku":"10059-011424","price":114.99,"currency_code":"USD","in_stock":true},{"title":"14x25x1","offer_id":44088996266106,"sku":"10059-011425","price":114.99,"currency_code":"USD","in_stock":true},{"title":"16x20x1","offer_id":44088996233338,"sku":"10059-011620","price":114.99,"currency_code":"USD","in_stock":true},{"title":"16x25x1","offer_id":44088996200570,"sku":"10059-011625","price":114.99,"currency_code":"USD","in_stock":true},{"title":"18x18x1","offer_id":44088996167802,"sku":"10059-011818","price":114.99,"currency_code":"USD","in_stock":true},{"title":"20x20x1","offer_id":44088996135034,"sku":"10059-012020","price":114.99,"currency_code":"USD","in_stock":true},{"title":"20x25x1","offer_id":44088996102266,"sku":"10059-012025","price":114.99,"currency_code":"USD","in_stock":true},{"title":"20x30x1","offer_id":44088996069498,"sku":"10059-012030","price":124.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/10059.png?v=1730059854"},{"product_id":"aaf-flanders-perfectpleat-high-capacity-merv-8-12-filters","title":"AAF Flanders PerfectPleat MERV 8 High Capacity (12 Filters)","description":"\u003cp\u003eThe \u003cstrong\u003eAAF Flanders PerfectPleat\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 Self-supporting synthetic pleated media with a distinctive pleating pattern that maintains airflow and maximizes dust-holding capacity\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Moisture-resistant beverage-board with internal 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\u003eCommercial and residential HVAC where a durable, reliable MERV 8 pleated filter is specified. Common in office buildings, schools, light commercial, and residential systems.\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":"12x12x1","offer_id":43877206392954,"sku":"173-303-011","price":123.99,"currency_code":"USD","in_stock":true},{"title":"12x24x1","offer_id":43877206425722,"sku":"173-319-011","price":89.99,"currency_code":"USD","in_stock":true},{"title":"14x20x1","offer_id":43877206458490,"sku":"173-371-011","price":89.99,"currency_code":"USD","in_stock":true},{"title":"14x25x1","offer_id":43877206491258,"sku":"173-375-011","price":104.99,"currency_code":"USD","in_stock":true},{"title":"16x20x1","offer_id":43877206524026,"sku":"173-500-011","price":92.99,"currency_code":"USD","in_stock":true},{"title":"16x25x1","offer_id":43877206556794,"sku":"173-600-011","price":96.99,"currency_code":"USD","in_stock":true},{"title":"18x24x1","offer_id":43877206589562,"sku":"173-635-011","price":120.99,"currency_code":"USD","in_stock":true},{"title":"19-1\/2x26-1\/2x1","offer_id":43877206622330,"sku":"173-11-19E26E","price":218.99,"currency_code":"USD","in_stock":true},{"title":"19-5\/8x21x1","offer_id":43877206655098,"sku":"173-11-19F21A","price":250.99,"currency_code":"USD","in_stock":true},{"title":"20x20x1","offer_id":43877206687866,"sku":"173-700-011","price":97.99,"currency_code":"USD","in_stock":true},{"title":"20x22x1","offer_id":43877206720634,"sku":"173-11-20A22A","price":224.99,"currency_code":"USD","in_stock":true},{"title":"20x24x1","offer_id":43877206753402,"sku":"173-782-011","price":185.99,"currency_code":"USD","in_stock":true},{"title":"20x25x1","offer_id":43877206786170,"sku":"173-800-011","price":109.99,"currency_code":"USD","in_stock":true},{"title":"24x24x1","offer_id":43877206818938,"sku":"173-863-011","price":107.99,"currency_code":"USD","in_stock":true},{"title":"24x36x1","offer_id":43877206851706,"sku":"173-829-011","price":372.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/PerfectPleat-HC-M8-2_HO_web.png?v=1725642706"},{"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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Size Koch Disposable Panel Air Filter","description":"\u003cp\u003eThis is a Koch \u003cstrong\u003ecustom-size MERV 1-4 disposable panel filter\u003c\/strong\u003e — built to your exact dimensions in any size. For HVAC equipment protection and maximum airflow where stock nominal sizes don't fit your filter opening.\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\u003eWhen a custom panel makes sense\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLegacy commercial air handlers with non-standard filter slots\u003c\/li\u003e\n\u003cli\u003eOlder residential returns that don't match today's nominal sizes\u003c\/li\u003e\n\u003cli\u003eWorkshop and garage ventilation systems\u003c\/li\u003e\n\u003cli\u003ePre-filter duty in multi-stage systems with non-standard housings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to order\u003c\/h3\u003e\n\u003cp\u003eMeasure to the nearest 1\/8 inch. Our \u003cstrong\u003eFilter Fit Guarantee\u003c\/strong\u003e covers measurement errors at no cost. \u003ca href=\"\/pages\/contact-us\"\u003eContact us\u003c\/a\u003e for help.\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\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e One-piece moisture-resistant chipboard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eService life:\u003c\/strong\u003e 30 days under typical use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizing tolerance:\u003c\/strong\u003e 1\/8 inch increments\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":"Koch","offers":[{"title":"Fiberglass \/ 1\/2\"","offer_id":43890231115898,"sku":"273-###-###","price":277.99,"currency_code":"USD","in_stock":true},{"title":"Fiberglass \/ 1\"","offer_id":43890240225402,"sku":"275-###-###","price":263.99,"currency_code":"USD","in_stock":true},{"title":"Fiberglass \/ 2\"","offer_id":43890240258170,"sku":"277-###-###","price":289.99,"currency_code":"USD","in_stock":true},{"title":"Polyester \/ 1\/2\"","offer_id":43890231148666,"sku":"283-###-###","price":328.99,"currency_code":"USD","in_stock":true},{"title":"Polyester \/ 1\"","offer_id":43890240290938,"sku":"285-###-###","price":218.99,"currency_code":"USD","in_stock":true},{"title":"Polyester \/ 2\"","offer_id":43890240323706,"sku":"287-###-###","price":364.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/koch_disposable_panel_filter_c18b3a94-7546-4668-8b18-a604f384e29f.jpg?v=1729014541"},{"product_id":"koch-multi-pleat-xl8-merv-8-12-filters","title":"Koch Multi-Pleat XL8 MERV 8 Standard Capacity (12 Filters)","description":"\u003cp\u003eThe \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\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":"10x10x1","offer_id":43892759232634,"sku":"102-041-020","price":103.99,"currency_code":"USD","in_stock":true},{"title":"10x20x1","offer_id":43892759265402,"sku":"102-700-001","price":103.99,"currency_code":"USD","in_stock":true},{"title":"12x12x1","offer_id":43892759396474,"sku":"102-700-051","price":103.99,"currency_code":"USD","in_stock":true},{"title":"12x16x1","offer_id":43932458516602,"sku":"P8S1-120-160","price":115.99,"currency_code":"USD","in_stock":true},{"title":"12x18x1","offer_id":43892759462010,"sku":"P8S1-120-180","price":136.99,"currency_code":"USD","in_stock":true},{"title":"12x20x1","offer_id":43892759494778,"sku":"102-041-002","price":104.99,"currency_code":"USD","in_stock":true},{"title":"12x24x1","offer_id":43892759527546,"sku":"102-700-002","price":104.99,"currency_code":"USD","in_stock":true},{"title":"12x25x1","offer_id":43892759560314,"sku":"102-041-003","price":104.99,"currency_code":"USD","in_stock":true},{"title":"14x20x1","offer_id":43892759756922,"sku":"102-700-003","price":104.99,"currency_code":"USD","in_stock":true},{"title":"14x24x1","offer_id":43892759789690,"sku":"102-041-005","price":104.99,"currency_code":"USD","in_stock":true},{"title":"14x25x1","offer_id":43892759822458,"sku":"102-700-004","price":104.99,"currency_code":"USD","in_stock":true},{"title":"14x30x1","offer_id":43892759855226,"sku":"102-041-039","price":115.99,"currency_code":"USD","in_stock":true},{"title":"15x18x1","offer_id":43932458549370,"sku":"P8S1-150-180","price":136.99,"currency_code":"USD","in_stock":true},{"title":"15x20x1","offer_id":43892759887994,"sku":"102-700-005","price":103.99,"currency_code":"USD","in_stock":true},{"title":"15x21x1","offer_id":43932458647674,"sku":"P8S1-150-210","price":173.99,"currency_code":"USD","in_stock":true},{"title":"15x25x1","offer_id":43892759920762,"sku":"102-041-006","price":103.99,"currency_code":"USD","in_stock":true},{"title":"16x16x1","offer_id":43892760019066,"sku":"102-041-007","price":103.99,"currency_code":"USD","in_stock":true},{"title":"16x20x1","offer_id":43892760084602,"sku":"102-700-006","price":104.99,"currency_code":"USD","in_stock":true},{"title":"16x24x1","offer_id":43892760150138,"sku":"102-041-008","price":104.99,"currency_code":"USD","in_stock":true},{"title":"16x25x1","offer_id":43892760182906,"sku":"102-700-007","price":104.99,"currency_code":"USD","in_stock":true},{"title":"16x30x1","offer_id":43892760215674,"sku":"102-041-018","price":124.99,"currency_code":"USD","in_stock":true},{"title":"18x18x1","offer_id":43892760248442,"sku":"102-041-009","price":104.99,"currency_code":"USD","in_stock":true},{"title":"18x20x1","offer_id":43892760281210,"sku":"102-041-015","price":104.99,"currency_code":"USD","in_stock":true},{"title":"18x24x1","offer_id":43892760313978,"sku":"102-041-016","price":104.99,"currency_code":"USD","in_stock":true},{"title":"18x25x1","offer_id":43892760346746,"sku":"102-041-011","price":104.99,"currency_code":"USD","in_stock":true},{"title":"18x30x1","offer_id":43892760379514,"sku":"102-041-044","price":154.99,"currency_code":"USD","in_stock":true},{"title":"20x20x1","offer_id":43892760477818,"sku":"102-700-008","price":104.99,"currency_code":"USD","in_stock":true},{"title":"20x22x1","offer_id":43896634278010,"sku":"102-041-049","price":104.99,"currency_code":"USD","in_stock":true},{"title":"20x24x1","offer_id":43892760543354,"sku":"102-041-017","price":104.99,"currency_code":"USD","in_stock":true},{"title":"20x25x1","offer_id":43892760576122,"sku":"102-700-009","price":105.99,"currency_code":"USD","in_stock":true},{"title":"20x30x1","offer_id":43892760608890,"sku":"102-041-012","price":149.99,"currency_code":"USD","in_stock":true},{"title":"24x24x1","offer_id":43892760739962,"sku":"102-700-010","price":124.99,"currency_code":"USD","in_stock":true},{"title":"24x30x1","offer_id":43892760772730,"sku":"102-041-013","price":140.99,"currency_code":"USD","in_stock":true},{"title":"25x25x1","offer_id":43892760838266,"sku":"102-041-014","price":130.99,"currency_code":"USD","in_stock":true},{"title":"10x20x2","offer_id":43892760903802,"sku":"102-700-011","price":183.99,"currency_code":"USD","in_stock":true},{"title":"12x12x2","offer_id":43896634310778,"sku":"102-042-035","price":182.99,"currency_code":"USD","in_stock":true},{"title":"12x20x2","offer_id":43896634343546,"sku":"102-042-002","price":188.99,"currency_code":"USD","in_stock":true},{"title":"12x24x2","offer_id":43892760936570,"sku":"102-700-012","price":179.99,"currency_code":"USD","in_stock":true},{"title":"12x25x2","offer_id":43896634376314,"sku":"102-042-003","price":179.99,"currency_code":"USD","in_stock":true},{"title":"14x20x2","offer_id":43892760969338,"sku":"102-700-013","price":178.99,"currency_code":"USD","in_stock":true},{"title":"14x25x2","offer_id":43892761002106,"sku":"102-700-014","price":174.99,"currency_code":"USD","in_stock":true},{"title":"14x30x2","offer_id":43896634409082,"sku":"102-042-039","p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Aire Aluminum Washable Permanent Filter","description":"\u003cp\u003eThe \u003cstrong\u003eThrift Aire Aluminum Washable Permanent Filter\u003c\/strong\u003e is a \u003cstrong\u003ewashable and reusable\u003c\/strong\u003e metal filter — wash it out every month or two, let it dry, and reinstall. No consumable to reorder, no packaging waste, no landfill trip. Typical service life is \u003cstrong\u003e5–10+ years\u003c\/strong\u003e with basic care.\u003c\/p\u003e\n\u003ch3\u003eWhen washable makes sense\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eRental properties and vacation homes where tenants or guests forget to change filters\u003c\/li\u003e\n  \u003cli\u003eCommercial and light industrial where the ongoing filter-budget line matters\u003c\/li\u003e\n  \u003cli\u003eHouseholds prioritizing sustainability and waste reduction\u003c\/li\u003e\n  \u003cli\u003ePre-filter duty in multi-stage commercial systems (washable first stage, pleated final)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat it doesn't do\u003c\/h3\u003e\n\u003cp\u003eWashable metal filters typically rate around MERV 1–4 — they excel at equipment protection and airflow, not fine-particle filtration. If allergens, smoke, or fine dust are the priority, use a pleated MERV 8 or higher as the final filter.\u003c\/p\u003e\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency:\u003c\/strong\u003e Wash every 30–60 days (more often in dusty environments)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e Rinse with warm water from the downstream side; mild detergent if needed. Shake dry, let air-dry completely before reinstalling.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrientation:\u003c\/strong\u003e Note the airflow-direction arrow before removing for cleaning.\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":"Smith Filter Corporation","offers":[{"title":"16x20x1","offer_id":43933394174074,"sku":"TA16201N","price":77.99,"currency_code":"USD","in_stock":true},{"title":"16x25x1","offer_id":43933394206842,"sku":"TA16251N","price":79.99,"currency_code":"USD","in_stock":true},{"title":"20x20x1","offer_id":43933394239610,"sku":"TA20201N","price":79.99,"currency_code":"USD","in_stock":true},{"title":"20x24x1","offer_id":43933394272378,"sku":"TA20241N","price":80.99,"currency_code":"USD","in_stock":true},{"title":"20x25x1","offer_id":43933394305146,"sku":"TA20251N","price":81.99,"currency_code":"USD","in_stock":true},{"title":"24x24x1","offer_id":43933394337914,"sku":"TA24241N","price":83.99,"currency_code":"USD","in_stock":true},{"title":"10x20x2","offer_id":43933394370682,"sku":"TA10202N","price":87.99,"currency_code":"USD","in_stock":true},{"title":"12x24x2","offer_id":43933394403450,"sku":"TA12242N","price":99.99,"currency_code":"USD","in_stock":true},{"title":"16x20x2","offer_id":43933394436218,"sku":"TA16202N","price":99.99,"currency_code":"USD","in_stock":true},{"title":"16x25x2","offer_id":43933394468986,"sku":"TA16252N","price":104.99,"currency_code":"USD","in_stock":true},{"title":"20x20x2","offer_id":43933394501754,"sku":"TA20202N","price":104.99,"currency_code":"USD","in_stock":true},{"title":"20x24x2","offer_id":43933394534522,"sku":"TA20242N","price":106.99,"currency_code":"USD","in_stock":true},{"title":"20x25x2","offer_id":43933395681402,"sku":"TA20252N","price":106.99,"currency_code":"USD","in_stock":true},{"title":"24x24x2","offer_id":43933394567290,"sku":"TA24242N","price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/Screenshot2025-02-24at3.08.54PM.png?v=1740438564"},{"product_id":"mech-8-aluminum-rust-resistant-permanent-filter","title":"Mech 8 Aluminum Washable Permanent Filter","description":"\u003cp\u003eThe \u003cstrong\u003eMech 8 Aluminum Washable Permanent Filter\u003c\/strong\u003e is a \u003cstrong\u003ewashable and reusable\u003c\/strong\u003e metal filter — wash it out every month or two, let it dry, and reinstall. No consumable to reorder, no packaging waste, no landfill trip. Typical service life is \u003cstrong\u003e5–10+ years\u003c\/strong\u003e with basic care.\u003c\/p\u003e\n\u003ch3\u003eWhen washable makes sense\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eRental properties and vacation homes where tenants or guests forget to change filters\u003c\/li\u003e\n  \u003cli\u003eCommercial and light industrial where the ongoing filter-budget line matters\u003c\/li\u003e\n  \u003cli\u003eHouseholds prioritizing sustainability and waste reduction\u003c\/li\u003e\n  \u003cli\u003ePre-filter duty in multi-stage commercial systems (washable first stage, pleated final)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat it doesn't do\u003c\/h3\u003e\n\u003cp\u003eWashable metal filters typically rate around MERV 1–4 — they excel at equipment protection and airflow, not fine-particle filtration. If allergens, smoke, or fine dust are the priority, use a pleated MERV 8 or higher as the final filter.\u003c\/p\u003e\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency:\u003c\/strong\u003e Wash every 30–60 days (more often in dusty environments)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e Rinse with warm water from the downstream side; mild detergent if needed. Shake dry, let air-dry completely before reinstalling.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrientation:\u003c\/strong\u003e Note the airflow-direction arrow before removing for cleaning.\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":"Smith Filter Corporation","offers":[{"title":"16x20x1","offer_id":43933396435066,"sku":"M816201N","price":87.99,"currency_code":"USD","in_stock":true},{"title":"16x25x1","offer_id":43933396467834,"sku":"M816251N","price":89.99,"currency_code":"USD","in_stock":true},{"title":"20x20x1","offer_id":43933396500602,"sku":"M820201N","price":89.99,"currency_code":"USD","in_stock":true},{"title":"20x24x1","offer_id":43933396533370,"sku":"M820241N","price":92.99,"currency_code":"USD","in_stock":true},{"title":"20x25x1","offer_id":43933396566138,"sku":"M820251N","price":92.99,"currency_code":"USD","in_stock":true},{"title":"20x32x1","offer_id":43963583365242,"sku":"M820321E","price":117.99,"currency_code":"USD","in_stock":true},{"title":"21x21x1","offer_id":43963582709882,"sku":"M821211E","price":104.99,"currency_code":"USD","in_stock":true},{"title":"24x24x1","offer_id":43933396598906,"sku":"M824241N","price":94.99,"currency_code":"USD","in_stock":true},{"title":"24x30x1","offer_id":43972557013114,"sku":"M824301E","price":124.99,"currency_code":"USD","in_stock":true},{"title":"24x36x1","offer_id":43968904527994,"sku":"M823.535.51E","price":199.99,"currency_code":"USD","in_stock":true},{"title":"10x20x2","offer_id":43933396631674,"sku":"M810202N","price":119.99,"currency_code":"USD","in_stock":true},{"title":"12x24x2","offer_id":43933396664442,"sku":"M812242N","price":119.99,"currency_code":"USD","in_stock":true},{"title":"16x20x2","offer_id":43933396697210,"sku":"M816202N","price":119.99,"currency_code":"USD","in_stock":true},{"title":"16x25x2","offer_id":43933396729978,"sku":"M816252N","price":119.99,"currency_code":"USD","in_stock":true},{"title":"20x20x2","offer_id":43933396762746,"sku":"M820202N","price":124.99,"currency_code":"USD","in_stock":true},{"title":"20x24x2","offer_id":43933396795514,"sku":"M820242N","price":124.99,"currency_code":"USD","in_stock":true},{"title":"20x25x2","offer_id":43933396828282,"sku":"M820252N","price":124.99,"currency_code":"USD","in_stock":true},{"title":"24x24x2","offer_id":43933396861050,"sku":"M824242N","price":129.99,"currency_code":"USD","in_stock":true},{"title":"30x36x2 (actual size 30-1\/4 x 35-5\/8 x 1-3\/4 - common geothermal size)","offer_id":44077095682170,"sku":null,"price":279.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/Screenshot2025-02-24at3.39.33PM.png?v=1740440437"},{"product_id":"electrostatic-aluminum-rust-resistant-permanent-filter","title":"Electrostatic Aluminum Washable Permanent Filter","description":"\u003cp\u003eThe \u003cstrong\u003eElectrostatic Aluminum Washable Permanent Filter\u003c\/strong\u003e is a \u003cstrong\u003ewashable and reusable\u003c\/strong\u003e metal filter — wash it out every month or two, let it dry, and reinstall. No consumable to reorder, no packaging waste, no landfill trip. Typical service life is \u003cstrong\u003e5–10+ years\u003c\/strong\u003e with basic care.\u003c\/p\u003e\n\u003ch3\u003eWhen washable makes sense\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eRental properties and vacation homes where tenants or guests forget to change filters\u003c\/li\u003e\n  \u003cli\u003eCommercial and light industrial where the ongoing filter-budget line matters\u003c\/li\u003e\n  \u003cli\u003eHouseholds prioritizing sustainability and waste reduction\u003c\/li\u003e\n  \u003cli\u003ePre-filter duty in multi-stage commercial systems (washable first stage, pleated final)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat it doesn't do\u003c\/h3\u003e\n\u003cp\u003eWashable metal filters typically rate around MERV 1–4 — they excel at equipment protection and airflow, not fine-particle filtration. If allergens, smoke, or fine dust are the priority, use a pleated MERV 8 or higher as the final filter.\u003c\/p\u003e\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency:\u003c\/strong\u003e Wash every 30–60 days (more often in dusty environments)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e Rinse with warm water from the downstream side; mild detergent if needed. Shake dry, let air-dry completely before reinstalling.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrientation:\u003c\/strong\u003e Note the airflow-direction arrow before removing for cleaning.\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":"Smith Filter Corporation","offers":[{"title":"16x20x1","offer_id":43933400367226,"sku":"EL16201N","price":81.99,"currency_code":"USD","in_stock":true},{"title":"16x25x1","offer_id":43933400399994,"sku":"EL16251N","price":85.99,"currency_code":"USD","in_stock":true},{"title":"20x20x1","offer_id":43933400432762,"sku":"EL20201N","price":85.99,"currency_code":"USD","in_stock":true},{"title":"20x24x1","offer_id":43933400465530,"sku":"EL20241N","price":86.99,"currency_code":"USD","in_stock":true},{"title":"20x25x1","offer_id":43933400498298,"sku":"EL20251N","price":86.99,"currency_code":"USD","in_stock":true},{"title":"24x24x1","offer_id":43933400531066,"sku":"EL24241N","price":89.99,"currency_code":"USD","in_stock":true},{"title":"10x20x2","offer_id":43933400563834,"sku":"EL10202N","price":109.99,"currency_code":"USD","in_stock":true},{"title":"12x24x2","offer_id":43933400596602,"sku":"EL10202N","price":109.99,"currency_code":"USD","in_stock":true},{"title":"16x20x2","offer_id":43933400629370,"sku":"EL16202N","price":109.0,"currency_code":"USD","in_stock":true},{"title":"16x25x2","offer_id":43933400662138,"sku":"EL16252N","price":114.99,"currency_code":"USD","in_stock":true},{"title":"20x20x2","offer_id":43933400694906,"sku":"EL20202N","price":114.99,"currency_code":"USD","in_stock":true},{"title":"20x24x2","offer_id":43933400727674,"sku":"EL20242N","price":114.99,"currency_code":"USD","in_stock":true},{"title":"20x25x2","offer_id":43933400760442,"sku":"EL20252N","price":114.99,"currency_code":"USD","in_stock":true},{"title":"24x24x2","offer_id":43933400793210,"sku":"EL24242N","price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/rsz_electrostatic_filter.jpg?v=1740443407"},{"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. Size and performance are consistent across all production runs.\u003c\/em\u003e\u003c\/p\u003e","brand":"RTF","offers":[{"title":"8x16x1","offer_id":44114865160314,"sku":"274-080-160","price":81.99,"currency_code":"USD","in_stock":true},{"title":"8x30x1","offer_id":44114865193082,"sku":"274-080-300","price":75.99,"currency_code":"USD","in_stock":true},{"title":"10x10x1","offer_id":44114865225850,"sku":"274-100-100","price":82.99,"currency_code":"USD","in_stock":true},{"title":"10x20x1","offer_id":44114865258618,"sku":"274-100-200","price":89.99,"currency_code":"USD","in_stock":true},{"title":"10x24x1","offer_id":44114865291386,"sku":"274-100-240","price":61.99,"currency_code":"USD","in_stock":true},{"title":"10x25x1","offer_id":44114865324154,"sku":"274-100-250","price":62.99,"currency_code":"USD","in_stock":true},{"title":"10x30x1","offer_id":44114865356922,"sku":"274-100-300","price":68.99,"currency_code":"USD","in_stock":true},{"title":"12x12x1","offer_id":44114865389690,"sku":"274-120-120","price":57.99,"currency_code":"USD","in_stock":true},{"title":"12x16x1","offer_id":44114865422458,"sku":"274-120-160","price":72.99,"currency_code":"USD","in_stock":true},{"title":"12x18x1","offer_id":44114865455226,"sku":"274-120-180","price":61.99,"currency_code":"USD","in_stock":true},{"title":"12x20x1","offer_id":44114865487994,"sku":"274-120-200","price":57.99,"currency_code":"USD","in_stock":true},{"title":"12x24x1","offer_id":44114865520762,"sku":"274-120-240","price":57.99,"currency_code":"USD","in_stock":true},{"title":"12x25x1","offer_id":44114865553530,"sku":"274-120-250","price":104.99,"currency_code":"USD","in_stock":true},{"title":"12x30x1","offer_id":44114865586298,"sku":"274-120-300","price":70.99,"currency_code":"USD","in_stock":true},{"title":"12x30-5\/8x1","offer_id":44114865619066,"sku":"274-120-306","price":92.99,"currency_code":"USD","in_stock":true},{"title":"12x36x1","offer_id":44114865651834,"sku":"274-120-360","price":90.99,"currency_code":"USD","in_stock":true},{"title":"14x14x1","offer_id":44114865684602,"sku":"274-140-140","price":57.99,"currency_code":"USD","in_stock":true},{"title":"14x18x1","offer_id":44114865717370,"sku":"274-140-180","price":68.99,"currency_code":"USD","in_stock":true},{"title":"14x20x1","offer_id":44114865750138,"sku":"274-140-200","price":57.99,"currency_code":"USD","in_stock":true},{"title":"14x24x1","offer_id":44114865782906,"sku":"274-140-240","price":57.99,"currency_code":"USD","in_stock":true},{"title":"14x25x1","offer_id":44114865815674,"sku":"274-140-250","price":59.99,"currency_code":"USD","in_stock":true},{"title":"14x30x1","offer_id":44114865848442,"sku":"274-140-300","price":94.99,"currency_code":"USD","in_stock":true},{"title":"15x20x1","offer_id":44114865881210,"sku":"274-150-200","price":59.99,"currency_code":"USD","in_stock":true},{"title":"15x25x1","offer_id":44114865913978,"sku":"274-150-250","price":62.99,"currency_code":"USD","in_stock":true},{"title":"15x30x1","offer_id":44114865946746,"sku":"274-150-300","price":90.99,"currency_code":"USD","in_stock":true},{"title":"15x30-5\/8x1","offer_id":44114865979514,"sku":"274-150-306","price":95.99,"currency_code":"USD","in_stock":true},{"title":"16x16x1","offer_id":44114866012282,"sku":"274-160-160","price":57.99,"currency_code":"USD","in_stock":true},{"title":"16x18x1","offer_id":44114866045050,"sku":"274-160-180","price":82.99,"currency_code":"USD","in_stock":true},{"title":"16x20x1","offer_id":44114866077818,"sku":"274-160-200","price":58.99,"currency_code":"USD","in_stock":true},{"title":"16x22-1\/4x1","offer_id":44114866110586,"sku":"274-160-222","price":92.99,"currency_code":"USD","in_stock":true},{"title":"16x24x1","offer_id":44114866143354,"sku":"274-160-240","price":59.99,"currency_code":"USD","in_stock":true},{"title":"16x25x1","offer_id":44114866176122,"sku":"274-160-250","price":59.99,"currency_code":"USD","in_stock":true},{"title":"16x30x1","offer_id":44114866208890,"sku":"274-160-300","price":84.99,"currency_code":"USD","in_stock":true},{"title":"18x18x1","offer_id":44114866241658,"sku":"274-180-180","price":57.99,"currency_code":"USD","in_stock":true},{"title":"18x20x1","offer_id":44114866274426,"sku":"274-180-200","price":81.99,"currency_code":"USD","in_stock":true},{"title":"18x24x1","offer_id":44114866307194,"sku":"274-180-240","price":59.99,"currency_code":"USD","in_stock":true},{"title":"18x25x1","offer_id":44114866339962,"sku":"274-180-250","price":91.99,"currency_code":"USD","in_stock":true},{"title":"18x30x1","offer_id":44114866372730,"sku":"274-180-300","price":102.99,"currency_code":"USD","in_stock":true},{"title":"18x36x1","offer_id":44114866405498,"sku":"274-180-360","price":126.99,"currency_code":"USD","in_stock":true},{"title":"19x27x1","offer_id":44114866438266,"sku":"274-190-270","price":95.99,"currency_code":"USD","in_stock":true},{"title":"20x20x1","offer_id":44114866471034,"sku":"274-200-200","price":58.99,"currency_code":"USD","in_stock":true},{"title":"20x22-1\/4x1","offer_id":44114866503802,"sku":"274-200-222","price":94.99,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Size AAF Flanders PREpleat LPD MERV 10 Air Filter","description":"\u003cp\u003eThe \u003cstrong\u003eAAF Flanders PREpleat LPD MERV 10\u003c\/strong\u003e pleated air filter is one of the lowest-resistance pleated filters in its efficiency class, and this custom-size listing lets you order it built to your exact dimensions. Whether you need to match an odd-sized residential return, a rooftop unit, or a built-in commercial housing, a custom PREpleat LPD delivers the same MERV 10 performance and high dust-holding capacity as our stock sizes.\u003c\/p\u003e\n\u003ch3\u003eWhen a custom size makes sense\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFilter housings with non-standard dimensions\u003c\/li\u003e\n  \u003cli\u003eLegacy commercial air handlers and rooftop packages\u003c\/li\u003e\n  \u003cli\u003eOlder residential returns that don't match today's nominal sizes\u003c\/li\u003e\n  \u003cli\u003eReplacing a filter you've been trimming to fit\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\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":"1\" Depth \/ SC (80055 Model)","offer_id":44001197293690,"sku":"C-80055","price":259.99,"currency_code":"USD","in_stock":true},{"title":"1\" Depth \/ HC (80255 Model)","offer_id":44001197326458,"sku":"C-80056","price":279.99,"currency_code":"USD","in_stock":true},{"title":"2\" Depth \/ SC (80055 Model)","offer_id":44001197359226,"sku":"C-80057","price":359.99,"currency_code":"USD","in_stock":true},{"title":"2\" Depth \/ HC (80255 Model)","offer_id":44001197391994,"sku":"C-80058","price":379.99,"currency_code":"USD","in_stock":true},{"title":"4\" Depth \/ SC (80055 Model)","offer_id":44001197424762,"sku":"C-80059","price":359.99,"currency_code":"USD","in_stock":true},{"title":"4\" Depth \/ HC (80255 Model)","offer_id":44001197457530,"sku":"C-80060","price":379.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/80055.png?v=1772057197"},{"product_id":"custom-size-aaf-flanders-prepleat-merv-11-filters","title":"Custom Size AAF Flanders PREpleat M11 MERV 11 Air Filter","description":"\u003cp\u003eThis is our \u003cstrong\u003ecustom-size AAF Flanders PREpleat M11\u003c\/strong\u003e air filter, delivering \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration built to your exact dimensions. When your HVAC system has a non-standard filter opening — common in older homes, commercial rooftop units, and legacy air handlers — stock nominal sizes leave gaps that let unfiltered air bypass the filter. Custom sizing closes that gap so your system actually filters the air it handles.\u003c\/p\u003e\n\u003ch3\u003eWhen a custom size is the right call\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLegacy air handlers with non-standard filter openings\u003c\/li\u003e\n  \u003cli\u003eCommercial rooftop units with manufacturer-specific filter slots\u003c\/li\u003e\n  \u003cli\u003eOlder residential returns that don't match today's nominal sizes\u003c\/li\u003e\n  \u003cli\u003eReplacement for a filter you've been trimming or stacking to fit\u003c\/li\u003e\n  \u003cli\u003eBuilt-in filter housings where the equipment was designed around the filter\u003c\/li\u003e\n\u003c\/ul\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\u003eHow to order\u003c\/h3\u003e\n\u003cp\u003eMeasure your existing filter (not the housing it sits in — filters are typically slightly smaller than the housing for installation clearance) to the nearest \u003cstrong\u003e1\/8 inch\u003c\/strong\u003e in length, width, and depth. If you're unsure about measurements or which filter spec is right for your system, \u003ca href=\"\/pages\/contact-us\"\u003econtact us\u003c\/a\u003e with a photo of your existing filter or housing and we'll confirm before production. Our \u003cstrong\u003eFilter Fit Guarantee\u003c\/strong\u003e means if you measure wrong, we'll remake the filter at no additional cost.\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\u003eConstruction\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  \u003cli\u003e\n\u003cstrong\u003eSizing tolerance:\u003c\/strong\u003e Built to 1\/8 inch increments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical applications\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":"1\" Depth \/ SC (Model 85655)","offer_id":44001224949882,"sku":null,"price":289.99,"currency_code":"USD","in_stock":true},{"title":"1\" Depth \/ HC (Model 85755)","offer_id":44001227505786,"sku":null,"price":309.99,"currency_code":"USD","in_stock":true},{"title":"2\" Depth \/ SC (Model 85655)","offer_id":44001224982650,"sku":null,"price":389.99,"currency_code":"USD","in_stock":true},{"title":"2\" Depth \/ HC (Model 85755)","offer_id":44001227538554,"sku":null,"price":409.99,"currency_code":"USD","in_stock":true},{"title":"4\" Depth \/ SC (Model 85655)","offer_id":44001225015418,"sku":null,"price":389.99,"currency_code":"USD","in_stock":true},{"title":"4\" Depth \/ HC (Model 85755)","offer_id":44001227571322,"sku":null,"price":409.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/85655.png?v=1772057739"},{"product_id":"custom-size-aaf-flanders-prepleat-merv-13-extended-surface-filters","title":"Custom Size AAF Flanders PREpleat M13 MERV 13 Air Filter","description":"\u003cp\u003eThis is our \u003cstrong\u003ecustom-size AAF Flanders PREpleat M13\u003c\/strong\u003e air filter, delivering \u003cstrong\u003eMERV 13\u003c\/strong\u003e filtration built to your exact dimensions. When your HVAC system has a non-standard filter opening — common in older homes, commercial rooftop units, and legacy air handlers — stock nominal sizes leave gaps that let unfiltered air bypass the filter. Custom sizing closes that gap so your system actually filters the air it handles.\u003c\/p\u003e\n\u003ch3\u003eWhen a custom size is the right call\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLegacy air handlers with non-standard filter openings\u003c\/li\u003e\n  \u003cli\u003eCommercial rooftop units with manufacturer-specific filter slots\u003c\/li\u003e\n  \u003cli\u003eOlder residential returns that don't match today's nominal sizes\u003c\/li\u003e\n  \u003cli\u003eReplacement for a filter you've been trimming or stacking to fit\u003c\/li\u003e\n  \u003cli\u003eBuilt-in filter housings where the equipment was designed around the filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to order\u003c\/h3\u003e\n\u003cp\u003eMeasure your existing filter (not the housing it sits in — filters are typically slightly smaller than the housing for installation clearance) to the nearest \u003cstrong\u003e1\/8 inch\u003c\/strong\u003e in length, width, and depth. If you're unsure about measurements or which filter spec is right for your system, \u003ca href=\"\/pages\/contact-us\"\u003econtact us\u003c\/a\u003e with a photo of your existing filter or housing and we'll confirm before production. Our \u003cstrong\u003eFilter Fit Guarantee\u003c\/strong\u003e means if you measure wrong, we'll remake the filter at no additional cost.\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\u003eConstruction\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  \u003cli\u003e\n\u003cstrong\u003eSizing tolerance:\u003c\/strong\u003e Built to 1\/8 inch increments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical applications\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":"1\" Depth","offer_id":44001272135802,"sku":null,"price":309.99,"currency_code":"USD","in_stock":true},{"title":"2\" Depth","offer_id":44001272168570,"sku":null,"price":409.99,"currency_code":"USD","in_stock":true},{"title":"4\" Depth","offer_id":44001272201338,"sku":null,"price":409.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/90013.png?v=1772057773"},{"product_id":"custom-size-koch-multi-pleat-xl8-merv-8-filters","title":"Custom Size Koch Multi-Pleat XL8 MERV 8 Air Filter","description":"\u003cp\u003eThis is our \u003cstrong\u003ecustom-size Koch Multi-Pleat XL8\u003c\/strong\u003e air filter, delivering \u003cstrong\u003eMERV 8\u003c\/strong\u003e filtration built to your exact dimensions. When your HVAC system has a non-standard filter opening — common in older homes, commercial rooftop units, and legacy air handlers — stock nominal sizes leave gaps that let unfiltered air bypass the filter. Custom sizing closes that gap so your system actually filters the air it handles.\u003c\/p\u003e\n\u003ch3\u003eWhen a custom size is the right call\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLegacy air handlers with non-standard filter openings\u003c\/li\u003e\n  \u003cli\u003eCommercial rooftop units with manufacturer-specific filter slots\u003c\/li\u003e\n  \u003cli\u003eOlder residential returns that don't match today's nominal sizes\u003c\/li\u003e\n  \u003cli\u003eReplacement for a filter you've been trimming or stacking to fit\u003c\/li\u003e\n  \u003cli\u003eBuilt-in filter housings where the equipment was designed around the filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to order\u003c\/h3\u003e\n\u003cp\u003eMeasure your existing filter (not the housing it sits in — filters are typically slightly smaller than the housing for installation clearance) to the nearest \u003cstrong\u003e1\/8 inch\u003c\/strong\u003e in length, width, and depth. If you're unsure about measurements or which filter spec is right for your system, \u003ca href=\"\/pages\/contact-us\"\u003econtact us\u003c\/a\u003e with a photo of your existing filter or housing and we'll confirm before production. Our \u003cstrong\u003eFilter Fit Guarantee\u003c\/strong\u003e means if you measure wrong, we'll remake the filter at no additional cost.\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\u003eConstruction\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  \u003cli\u003e\n\u003cstrong\u003eSizing tolerance:\u003c\/strong\u003e Built to 1\/8 inch increments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical applications\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\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":"1\/2\" Depth \/ Standard","offer_id":44001298448506,"sku":null,"price":289.99,"currency_code":"USD","in_stock":true},{"title":"1\/2\" Depth \/ High","offer_id":44001298645114,"sku":null,"price":309.99,"currency_code":"USD","in_stock":true},{"title":"1\" Depth \/ Standard","offer_id":44001298481274,"sku":null,"price":249.99,"currency_code":"USD","in_stock":true},{"title":"1\" Depth \/ High","offer_id":44001298677882,"sku":null,"price":269.99,"currency_code":"USD","in_stock":true},{"title":"2\" Depth \/ Standard","offer_id":44001298514042,"sku":null,"price":349.99,"currency_code":"USD","in_stock":true},{"title":"2\" Depth \/ High","offer_id":44001298710650,"sku":null,"price":369.99,"currency_code":"USD","in_stock":true},{"title":"4\" Depth \/ Standard","offer_id":44001298546810,"sku":null,"price":349.99,"currency_code":"USD","in_stock":true},{"title":"4\" Depth \/ High","offer_id":44001298743418,"sku":null,"price":369.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/koch_xl8.png?v=1730175658"},{"product_id":"custom-size-aaf-flanders-ez-flow-basic-fiberglass-filters-12-pack","title":"Custom Size Flanders EZ Flow Fiberglass MERV 1-4 Air Filter","description":"\u003cp\u003eThis is our \u003cstrong\u003ecustom-size Flanders EZ Flow Fiberglass\u003c\/strong\u003e air filter, delivering \u003cstrong\u003eMERV 1-4\u003c\/strong\u003e filtration built to your exact dimensions. When your HVAC system has a non-standard filter opening — common in older homes, commercial rooftop units, and legacy air handlers — stock nominal sizes leave gaps that let unfiltered air bypass the filter. Custom sizing closes that gap so your system actually filters the air it handles.\u003c\/p\u003e\n\u003ch3\u003eWhen a custom size is the right call\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLegacy air handlers with non-standard filter openings\u003c\/li\u003e\n  \u003cli\u003eCommercial rooftop units with manufacturer-specific filter slots\u003c\/li\u003e\n  \u003cli\u003eOlder residential returns that don't match today's nominal sizes\u003c\/li\u003e\n  \u003cli\u003eReplacement for a filter you've been trimming or stacking to fit\u003c\/li\u003e\n  \u003cli\u003eBuilt-in filter housings where the equipment was designed around the filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to order\u003c\/h3\u003e\n\u003cp\u003eMeasure your existing filter (not the housing it sits in — filters are typically slightly smaller than the housing for installation clearance) to the nearest \u003cstrong\u003e1\/8 inch\u003c\/strong\u003e in length, width, and depth. If you're unsure about measurements or which filter spec is right for your system, \u003ca href=\"\/pages\/contact-us\"\u003econtact us\u003c\/a\u003e with a photo of your existing filter or housing and we'll confirm before production. Our \u003cstrong\u003eFilter Fit Guarantee\u003c\/strong\u003e means if you measure wrong, we'll remake the filter at no additional cost.\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 bonded with resinous adhesive. Rated MERV 1 clean and builds up to MERV 4 as the filter loads.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e One-piece heavy chipboard, moisture-resistant. Media adhered directly to the frame with hot-melt adhesive, no metal retainer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 150°F (66°C)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSizing tolerance:\u003c\/strong\u003e Built to 1\/8 inch increments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical applications\u003c\/h3\u003e\n\u003cp\u003eCustom residential, rental, commercial, and legacy HVAC applications prioritizing equipment protection and maximum airflow over fine filtration.\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":44001301528698,"sku":"10055","price":199.99,"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":"custom-size-mech-8-aluminum-rust-resistant-washable-permanent-filter","title":"Custom Size Mech 8 Aluminum Washable Permanent Filter","description":"\u003cp\u003eThis is our \u003cstrong\u003ecustom-size Mech 8 Aluminum Washable Permanent Filter\u003c\/strong\u003e — built to your exact dimensions in any size. Same rust-resistant aluminum construction as our stock-size washable filters, same indefinite service life with basic monthly care; just sized to fit non-standard filter openings.\u003c\/p\u003e\n\u003ch3\u003eWhen a custom washable makes sense\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eNon-standard filter openings where stock sizes leave bypass gaps\u003c\/li\u003e\n  \u003cli\u003eRental properties where tenants forget to change filters\u003c\/li\u003e\n  \u003cli\u003eCommercial facilities wanting to eliminate the recurring filter spend\u003c\/li\u003e\n  \u003cli\u003eOff-grid, remote, or retreat properties with limited filter supply chain\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat you get\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRust-resistant aluminum frame\u003c\/strong\u003e — holds up to repeated washing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReusable filter system\u003c\/strong\u003e — wash, dry, return to service\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMERV 1-4 rating\u003c\/strong\u003e — equipment protection with maximum airflow\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTypical service life 5–10+ years\u003c\/strong\u003e with basic monthly care\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003e1\/8 inch sizing tolerance\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\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\u003eHow to order\u003c\/h3\u003e\n\u003cp\u003eMeasure your filter opening to the nearest 1\/8 inch. If replacing an existing filter, measure the filter itself, not the housing. \u003ca href=\"\/pages\/contact-us\"\u003eContact us\u003c\/a\u003e if you're unsure — a quick photo of the existing filter or housing lets us confirm before production. Our \u003cstrong\u003eFilter Fit Guarantee\u003c\/strong\u003e means if you measure wrong, we'll remake the filter at no additional cost.\u003c\/p\u003e\n\u003ch3\u003eCare and maintenance\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\u003eLet 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\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":"Smith Filter Corporation","offers":[{"title":"1\" Depth","offer_id":44001370701946,"sku":"","price":189.99,"currency_code":"USD","in_stock":true},{"title":"2\" Depth","offer_id":44001370734714,"sku":"","price":239.99,"currency_code":"USD","in_stock":true},{"title":"4\" Depth","offer_id":44001371291770,"sku":null,"price":289.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/Screenshot2025-02-24at3.39.33PM.png?v=1740440437"},{"product_id":"custom-size-electrostatic-aluminum-rust-resistant-washable-permanent-filter","title":"Custom Size Electrostatic Aluminum Washable Permanent Filter","description":"\u003cp\u003eThis is our \u003cstrong\u003ecustom-size Electrostatic Aluminum Washable Permanent Filter\u003c\/strong\u003e — built to your exact dimensions in any size. Same rust-resistant aluminum construction as our stock-size washable filters, same indefinite service life with basic monthly care; just sized to fit non-standard filter openings.\u003c\/p\u003e\n\u003ch3\u003eWhen a custom washable makes sense\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eNon-standard filter openings where stock sizes leave bypass gaps\u003c\/li\u003e\n  \u003cli\u003eRental properties where tenants forget to change filters\u003c\/li\u003e\n  \u003cli\u003eCommercial facilities wanting to eliminate the recurring filter spend\u003c\/li\u003e\n  \u003cli\u003eOff-grid, remote, or retreat properties with limited filter supply chain\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat you get\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRust-resistant aluminum frame\u003c\/strong\u003e — holds up to repeated washing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReusable filter system\u003c\/strong\u003e — wash, dry, return to service\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMERV 1-4 rating\u003c\/strong\u003e — equipment protection with maximum airflow\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTypical service life 5–10+ years\u003c\/strong\u003e with basic monthly care\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003e1\/8 inch sizing tolerance\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\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\u003eHow to order\u003c\/h3\u003e\n\u003cp\u003eMeasure your filter opening to the nearest 1\/8 inch. If replacing an existing filter, measure the filter itself, not the housing. \u003ca href=\"\/pages\/contact-us\"\u003eContact us\u003c\/a\u003e if you're unsure — a quick photo of the existing filter or housing lets us confirm before production. Our \u003cstrong\u003eFilter Fit Guarantee\u003c\/strong\u003e means if you measure wrong, we'll remake the filter at no additional cost.\u003c\/p\u003e\n\u003ch3\u003eCare and maintenance\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\u003eLet 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\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":"Smith Filter Corporation","offers":[{"title":"1\" Depth","offer_id":44001372110970,"sku":"","price":179.99,"currency_code":"USD","in_stock":true},{"title":"2\" Depth","offer_id":44001372143738,"sku":"","price":229.99,"currency_code":"USD","in_stock":true},{"title":"3\" Depth","offer_id":44001372176506,"sku":"","price":304.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/rsz_electrostatic_filter.jpg?v=1740443407"},{"product_id":"custom-size-thrift-aire-aluminum-rust-resistant-washable-permanent-filter","title":"Custom Size Thrift Aire Aluminum Washable Permanent Filter","description":"\u003cp\u003eThis is our \u003cstrong\u003ecustom-size Thrift Aire Aluminum Washable Permanent Filter\u003c\/strong\u003e — built to your exact dimensions in any size. Same rust-resistant aluminum construction as our stock-size washable filters, same indefinite service life with basic monthly care; just sized to fit non-standard filter openings.\u003c\/p\u003e\n\u003ch3\u003eWhen a custom washable makes sense\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eNon-standard filter openings where stock sizes leave bypass gaps\u003c\/li\u003e\n  \u003cli\u003eRental properties where tenants forget to change filters\u003c\/li\u003e\n  \u003cli\u003eCommercial facilities wanting to eliminate the recurring filter spend\u003c\/li\u003e\n  \u003cli\u003eOff-grid, remote, or retreat properties with limited filter supply chain\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat you get\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRust-resistant aluminum frame\u003c\/strong\u003e — holds up to repeated washing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReusable filter system\u003c\/strong\u003e — wash, dry, return to service\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMERV 1-4 rating\u003c\/strong\u003e — equipment protection with maximum airflow\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTypical service life 5–10+ years\u003c\/strong\u003e with basic monthly care\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003e1\/8 inch sizing tolerance\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\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\u003eHow to order\u003c\/h3\u003e\n\u003cp\u003eMeasure your filter opening to the nearest 1\/8 inch. If replacing an existing filter, measure the filter itself, not the housing. \u003ca href=\"\/pages\/contact-us\"\u003eContact us\u003c\/a\u003e if you're unsure — a quick photo of the existing filter or housing lets us confirm before production. Our \u003cstrong\u003eFilter Fit Guarantee\u003c\/strong\u003e means if you measure wrong, we'll remake the filter at no additional cost.\u003c\/p\u003e\n\u003ch3\u003eCare and maintenance\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\u003eLet 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\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":"Smith Filter Corporation","offers":[{"title":"1\" Depth","offer_id":44001372700794,"sku":"","price":169.99,"currency_code":"USD","in_stock":true},{"title":"2\" Depth","offer_id":44001372733562,"sku":"","price":219.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/Screenshot2025-02-24at3.08.54PM.png?v=1740438564"},{"product_id":"naturalaire-standard-merv-8-filters-6-pack","title":"NaturalAire Standard MERV 8 (6 Filters)","description":"\u003cp\u003eThe \u003cstrong\u003eNaturalAire Standard\u003c\/strong\u003e pleated air filter delivers \u003cstrong\u003eMERV 8\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\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\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":"16x20x1","offer_id":44077370736762,"sku":"84955-011620","price":74.99,"currency_code":"USD","in_stock":true},{"title":"16x25x1","offer_id":44077370802298,"sku":"84955-011625","price":74.99,"currency_code":"USD","in_stock":true},{"title":"20x20x1","offer_id":44077371031674,"sku":"84955-012020","price":74.99,"currency_code":"USD","in_stock":true},{"title":"20x25x1","offer_id":44077371097210,"sku":"84955-011625","price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/products\/flanders-aaf-pleated-filter-naturalaire-standard-merv-8-filters-12-pack-23087965900.png?v=1767669045"},{"product_id":"filtrete-basic-dust-mpr-300","title":"Filtrete™ Basic Dust Reduction Filter (MPR 300)","description":"\u003cdiv class=\"rtf-product-body\"\u003e\n\u003cp\u003eFiltrete's entry-tier 1\" pleated air filter with MPR 300 (≈MERV 5). Captures large dust particles, lint, and household dust. Made by 3M.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat MPR 300 actually means.\u003c\/strong\u003e MPR 300 is roughly equivalent to MERV 5. The pleated media captures the larger end of the household particle range — visible dust, lint, and large pollen — while keeping airflow restriction low. Not intended as a fine-particle or allergen-grade filter.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWho it's for.\u003c\/strong\u003e Light residential and small commercial use where basic dust capture is the priority and airflow needs to stay maximized.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen to replace.\u003c\/strong\u003e Every 90 days under typical conditions; every 30–60 days in dusty environments or with pets. Inspect monthly — if light no longer passes through the pleats, it's time to change.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSold in cases of 4.\u003c\/strong\u003e Order quantity must be a multiple of 4. Cases ship in original 3M packaging.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAbout this product line.\u003c\/strong\u003e RememberTheFilter carries genuine 3M-manufactured Filtrete filters in original packaging — not third-party knockoffs or relabeled imports. Ships from our distribution network, typically next business day.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Filtrete","offers":[{"title":"12x20x1","offer_id":44119692411002,"sku":"4314480","price":7.59,"currency_code":"USD","in_stock":true},{"title":"12x24x1","offer_id":44119692443770,"sku":"4012485","price":7.59,"currency_code":"USD","in_stock":true},{"title":"14x20x1","offer_id":44119692476538,"sku":"4314431","price":7.59,"currency_code":"USD","in_stock":true},{"title":"14x24x1","offer_id":44119692509306,"sku":"4314522","price":7.59,"currency_code":"USD","in_stock":true},{"title":"14x25x1","offer_id":44119692542074,"sku":"4314423","price":7.59,"currency_code":"USD","in_stock":true},{"title":"16x20x1","offer_id":44119692574842,"sku":"4314381","price":7.59,"currency_code":"USD","in_stock":true},{"title":"16x25x1","offer_id":44119692607610,"sku":"4314399","price":7.59,"currency_code":"USD","in_stock":true},{"title":"18x18x1","offer_id":44119692640378,"sku":"4314472","price":7.59,"currency_code":"USD","in_stock":true},{"title":"18x24x1","offer_id":44119692673146,"sku":"4314506","price":7.59,"currency_code":"USD","in_stock":true},{"title":"20x20x1","offer_id":44119692705914,"sku":"4314407","price":7.59,"currency_code":"USD","in_stock":true},{"title":"20x24x1","offer_id":44119692738682,"sku":"4314548","price":7.59,"currency_code":"USD","in_stock":true},{"title":"20x25x1","offer_id":44119692771450,"sku":"4314415","price":7.59,"currency_code":"USD","in_stock":true},{"title":"20x30x1","offer_id":44119692804218,"sku":"4314514","price":7.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/4314415_A.eps_High.jpg?v=1778090527"},{"product_id":"filtrete-dust-reduction-mpr-700","title":"Filtrete™ Dust Reduction Filter (MPR 700 \/ MERV 8)","description":"\u003cdiv class=\"rtf-product-body\"\u003e\n\u003cp\u003eFiltrete 1\" pleated air filter with MPR 700, equivalent to MERV 8. A step up from basic, capturing dust, dust mite debris, and pollen while maintaining strong airflow. Made by 3M.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat MPR 700 actually means.\u003c\/strong\u003e MPR 700 is equivalent to MERV 8 — the standard efficiency rating used in most residential and light commercial HVAC specifications. Captures dust mite debris, pollen, and standard airborne dust without significantly restricting blower performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWho it's for.\u003c\/strong\u003e Residential and light commercial buildings looking for everyday dust and pollen reduction without restricting airflow.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen to replace.\u003c\/strong\u003e Every 90 days under typical conditions; every 30–60 days in higher-traffic or pet households. Inspect monthly — if light no longer passes through the pleats, it's time to change.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSold in cases of 4.\u003c\/strong\u003e Order quantity must be a multiple of 4. Cases ship in original 3M packaging.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAbout this product line.\u003c\/strong\u003e RememberTheFilter carries genuine 3M-manufactured Filtrete filters in original packaging — not third-party knockoffs or relabeled imports. 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