{"title":"14x18x1 Furnace \u0026 AC Air Filters","description":"\u003cdiv class=\"rtf-collection-intro\"\u003e\n\n\u003ch2\u003e14x18x1 HVAC, Furnace \u0026amp; AC Filters\u003c\/h2\u003e\n\n\u003cp\u003eReplacement 14x18x1 air filters for homes, offices, and commercial HVAC systems. This collection covers every MERV rating we stock: fiberglass MERV 1–4, pleated MERV 8, MERV 10, MERV 11, and hospital-grade MERV 13. Free shipping on orders over $50.\u003c\/p\u003e\n\n\u003cp\u003eIf your rack is labeled 14x18x1, any filter here will fit. Actual dimensions vary slightly by manufacturer—check the product page for exact specs. Need a non-standard size? Our \u003ca href=\"\/collections\/custom-filters\"\u003ecustom filters\u003c\/a\u003e cut to 1\/8″ precision.\u003c\/p\u003e\n\n\u003ch3\u003eWhich MERV Rating Should I Choose?\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMERV 1–4 (fiberglass)\u003c\/strong\u003e — Lowest cost. Protects your blower and coil from debris but won't improve air quality. Best for rentals and monthly-change schedules.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMERV 8 (pleated)\u003c\/strong\u003e — Residential and light-commercial standard. Captures dust, pollen, lint, and mold spores.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMERV 10–11\u003c\/strong\u003e — Captures pet dander, finer particulate, and some bacteria. Recommended for pets, allergies, and facilities pursuing better IAQ.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMERV 13\u003c\/strong\u003e — Hospital-grade. Captures smoke, bacteria, virus carriers, and most airborne allergens. ASHRAE and CDC recommend MERV 13 where the HVAC system can support it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eNot sure? Take our \u003ca href=\"\/pages\/merv-quiz\"\u003eMERV quiz\u003c\/a\u003e or call \u003cstrong\u003e1-866-469-8556\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eHow Often Should I Change a 14x18x1 Filter?\u003c\/h3\u003e\n\n\u003cp\u003ePlan on every \u003cstrong\u003e60–90 days\u003c\/strong\u003e for a 1″ filter in a typical residential or light-commercial system. Homes with pets, smokers, or allergies may need to replace every 30–60 days. \u003ca href=\"\/collections\/subscription-filters\"\u003eSubscribe \u0026amp; save 10%\u003c\/a\u003e on any filter in this collection.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Buy From RememberTheFilter.com\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrusted brands\u003c\/strong\u003e — AAF Flanders, Koch, and our own PrimeShield line, built by manufacturers we've partnered with for nearly two decades.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter Fit Guarantee\u003c\/strong\u003e — if it doesn't fit as expected, we'll make it right.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree shipping over $50\u003c\/strong\u003e to the lower 48, subscription discounts up to 10%, commercial \u0026amp; bulk pricing available.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e","products":[{"product_id":"14x18x1-ez-flow-ii-filters-10055-011418-12-filters","title":"14x18x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter 10055.011418 (12 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e14″ × 18″ × 1″\u003c\/strong\u003e \u003cstrong\u003eFlanders EZ Flow\u003c\/strong\u003e spun-fiberglass panel filter (part number \u003cstrong\u003e10055.011418\u003c\/strong\u003e) ships as a case of \u003cstrong\u003e12 filters\u003c\/strong\u003e and is built for one job: \u003cstrong\u003eprotect your HVAC equipment while maximizing airflow\u003c\/strong\u003e. It's the category-leading fiberglass filter that's been keeping coils, blowers, and heat exchangers free of lint and large debris for decades.\u003c\/p\u003e\n\u003ch3\u003eUnderstanding the MERV 1–4 rating\u003c\/h3\u003e\n\u003cp\u003eFiberglass media is rated \u003cstrong\u003eMERV 1 when clean and builds up to MERV 4\u003c\/strong\u003e as dust loads onto the fibers. That's not inconsistency — it's how spun-glass media works. A fresh filter lets the most air through while still blocking larger debris; as dust collects, the media becomes more efficient at catching finer particles. The goal of a MERV 1–4 filter isn't air quality — it's \u003cstrong\u003eequipment protection with maximum airflow\u003c\/strong\u003e. It keeps lint, hair, and large dust out of your coil and blower, which is exactly what older systems, high-airflow applications, and pre-filter duty need.\u003c\/p\u003e\n\u003ch3\u003eEquipment protection, not air quality\u003c\/h3\u003e\n\u003cp\u003eEZ Flow isn't designed to filter fine dust, allergens, or smoke. It's designed to stop the stuff that damages HVAC equipment — lint, hair, large dust clumps, and insulation fragments — before they hit your coil or blower. For allergen filtration, step up to a pleated MERV 8 or higher. For system protection with maximum airflow (and the lowest filter cost in the category), EZ Flow is the right tool.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Continuous-filament spun fiberglass, bonded with resinous adhesive for rigidity and compression resistance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e One-piece heavy chipboard — no corner seams to separate. Media adhered directly to the frame with hot-melt adhesive, no metal retainer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUL listing:\u003c\/strong\u003e UL 900 listed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eService life:\u003c\/strong\u003e Replace every 30 days under typical use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen EZ Flow is the right choice\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLegacy or older HVAC systems not designed for higher-MERV static pressure\u003c\/li\u003e\n  \u003cli\u003eRental properties where maintenance burden matters more than fine filtration\u003c\/li\u003e\n  \u003cli\u003eWorkshops, garages, and outbuildings with lots of airborne debris\u003c\/li\u003e\n  \u003cli\u003ePre-filter duty in front of a higher-MERV filter\u003c\/li\u003e\n  \u003cli\u003eCommercial applications prioritizing airflow over fine particulate capture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/EZ_Flow_II_AFP-1-392D-3.pdf?v=1753301648%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload EZ Flow spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-1-4-fiberglass-panel-basic-air-filters-12-pack\"\u003ePrimeShield MAX Airflow (MERV 1–4)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":33437435148,"sku":"10055-011418","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/4261392_A.eps_High.jpg?v=1769975679"},{"product_id":"14x18x1-naturalaire-microparticle-merv-10-filters-6-pack","title":"14x18x1 NaturalAire Microparticle MERV 10 85256.011418 (6 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e14″ × 18″ × 1″\u003c\/strong\u003e listing (part number \u003cstrong\u003e85256.011418\u003c\/strong\u003e) of the \u003cstrong\u003eNaturalAire Microparticle\u003c\/strong\u003e pleated air filter delivers \u003cstrong\u003eMERV 10\u003c\/strong\u003e filtration and ships as a case of \u003cstrong\u003e6 filters\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIndividually sealed.\u003c\/strong\u003e Every NaturalAire filter ships individually wrapped inside the case — each filter protected from dust, moisture, and shipping damage until you're ready to install it. A real quality difference from bulk-packed competitors, and it matters especially for customers reordering a case at a time.\u003c\/p\u003e\n\u003ch3\u003eWhat MERV 10 captures\u003c\/h3\u003e\n\u003cp\u003eFiner household dust, most pollen, mold spores, pet dander, and larger bacteria-sized particles — a practical step up for allergy-sensitive homes, wildfire-smoke regions, and light commercial spaces. Mechanical (not electrostatic) capture means performance doesn't fade as the filter loads.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Microparticle pleated synthetic media with enhanced surface area. Mechanical capture — performance doesn't fade with age.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Clay-coated recyclable moisture-resistant beverage-board with wire-mesh media support.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 180°F (82°C)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eResidential and light commercial HVAC where MERV 10 filtration is wanted for allergy sensitivity, pet dander, mold spores, or finer dust capture — without the pressure drop of MERV 13.\u003c\/p\u003e\n\u003ch3\u003eReplacement schedule\u003c\/h3\u003e\n\u003cp\u003eAt 1″ depth, plan to replace this filter \u003cstrong\u003eevery 60–90 days\u003c\/strong\u003e under typical residential or light commercial loading. High-dust environments, pet homes, wildfire smoke events, or construction-adjacent sites will shorten that window. Check the filter monthly through the first cycle to calibrate your schedule.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-10-pleated-air-filters-12-pack\"\u003ePrimeShield Enhanced (MERV 10)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":33448074636,"sku":"85256-011418","price":127.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/85256_6pack_c2065a43-3284-454c-ac47-01c75fbeda5f.jpg?v=1720569154"},{"product_id":"14x18x1-exact-pleated-merv-8-filters-12-pack","title":"14x18x1 Exact Filters Pleated MERV 10 (12 pack)","description":"\u003cp\u003eWhen your HVAC system calls for a 14 x 18 x 1″ filter and the standard aisle doesn't carry it, this Exact Filters® unit is cut to your exact 14 x 18 x 1″ spec — no shims, no gaps, no bypass air.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePreviously listed as MERV 8.\u003c\/strong\u003e The manufacturer has re-rated this filter to MERV 10. It is the same size and construction and ships in the same 12-pack, so if you are reordering, nothing about your filter has changed.\u003c\/p\u003e\n\n\u003cp\u003eFilter bypass — air slipping past a loose frame instead of through the pleats — is one of the most common reasons a filter underperforms its MERV rating in the real world. A precise fit closes that gap.\u003c\/p\u003e\n\n\u003cp\u003eThis MERV 10 pleated filter is built for sites that want more capture than a standard MERV 8 without pushing the blower to work harder than necessary. It handles the airborne particles most occupants actually notice — dust, pollen, pet dander — plus more of the fine dust that settles on surfaces, while keeping static pressure in a range every standard system can tolerate.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eNominal size: 14 x 18 x 1″\u003c\/li\u003e\n  \u003cli\u003eActual dimensions: 14 x 18 x 3\/4″\u003c\/li\u003e\n  \u003cli\u003eEfficiency rating: MERV 10 (previously listed as MERV 8)\u003c\/li\u003e\n  \u003cli\u003eQuantity: 12 filters per carton\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eCustomers typically order a 14 x 18 x 1″ custom filter because their system is older, was built by a regional manufacturer, was retrofitted, or was framed on-site by an installer who didn't conform to a standard filter dimension. If that describes your situation, you're in the right place.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCardboard frame with reinforced media for structural stability during handling and installation\u003c\/li\u003e\n  \u003cli\u003eReplace approximately every 90 days in standard installations; shorter intervals in high-dust, smoky, or heavy-use environments\u003c\/li\u003e\n  \u003cli\u003eOrientation arrow printed on the frame to ensure correct airflow direction at install\u003c\/li\u003e\n  \u003cli\u003eSuitable for forced-air furnaces, central AC, heat pumps, and packaged HVAC systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:15px;font-weight:bold;color:#1E2D7D;margin:0 0 12px 0;\"\u003eSame 14 x 18 x 1″ size, different efficiency rating\u003c\/p\u003e\u003ctable width=\"100%\" cellpadding=\"0\" cellspacing=\"8\" style=\"border-collapse:separate;margin:18px 0 0 0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/14x18x1-exact-ez-flow-basic-merv-4-filters-12-pack\" style=\"display:block;background-color:#000000;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 14 x 18 x 1″ filter in MERV 1-4\" title=\"See the 14 x 18 x 1″ filter in MERV 1-4\"\u003eMERV 1-4\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eBasic dust-stop\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/14x18x1-exact-pleated-merv-11-filters-12-pack\" style=\"display:block;background-color:#6B3FA0;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 14 x 18 x 1″ filter in MERV 11\" title=\"See the 14 x 18 x 1″ filter in MERV 11\"\u003eMERV 11\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eEnhanced efficiency\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/14x18x1-exact-pleated-merv-13-filters-12-pack\" style=\"display:block;background-color:#C8102E;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 14 x 18 x 1″ filter in MERV 13\" title=\"See the 14 x 18 x 1″ filter in MERV 13\"\u003eMERV 13\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eHighest efficiency\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ctable width=\"100%\" cellpadding=\"0\" cellspacing=\"0\" border=\"0\" style=\"border-collapse:separate;margin:24px 0 0 0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd style=\"background-color:#1E2D7D;border-radius:8px;padding:22px 24px;vertical-align:top;\"\u003e\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:18px;font-weight:bold;color:#ffffff;margin:0 0 8px 0;line-height:1.3;\"\u003eNeed 14 x 18 x 2″ or another depth?\u003c\/p\u003e\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:14px;color:#ffffff;margin:0 0 16px 0;line-height:1.55;opacity:0.95;\"\u003eThis size is available in other depths we don't stock online — reach out and our team will quote it for you, typically same business day.\u003c\/p\u003e\n\u003ctable cellpadding=\"0\" cellspacing=\"10\" border=\"0\" style=\"border-collapse:separate;margin:0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"padding:0;vertical-align:top;\"\u003e\u003ca href=\"tel:+18664698556\" style=\"display:block;background-color:#007B6B;color:#ffffff;text-decoration:none;padding:14px 22px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:16px;line-height:1.2;text-align:center;box-sizing:border-box;white-space:nowrap;\"\u003eCall 866-469-8556\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:0;vertical-align:top;\"\u003e\u003ca href=\"\/pages\/contact-us\" style=\"display:block;background-color:#ffffff;color:#1E2D7D;text-decoration:none;padding:14px 22px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:16px;line-height:1.2;text-align:center;box-sizing:border-box;white-space:nowrap;\"\u003eContact us for a quote\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Exact Filters","offers":[{"title":"Default Title","offer_id":44087417045114,"sku":"80055-01299 14 x 18 x 1 E","price":201.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/ExactM10_770b06fc-6fa4-4d35-9070-df964302bb3e.jpg?v=1794416511"},{"product_id":"14x18x1-exact-ez-flow-basic-merv-4-filters-12-pack","title":"14x18x1 Exact Filters Fiberglass MERV 1-4 (12 pack)","description":"\u003cp\u003eThis 14 x 18 x 1″ Exact Filters® air filter is manufactured to your exact dimensions, eliminating the guesswork of matching an off-the-shelf filter to a non-standard 14 x 18 x 1″ opening.\u003c\/p\u003e\n\n\u003cp\u003eEven a quarter-inch of gap around a filter can allow a significant percentage of return air to bypass the media entirely, which is why the exact fit matters as much as the filter's efficiency rating.\u003c\/p\u003e\n\n\u003cp\u003eThis filter carries a MERV 1-4 rating, which places it at the economy end of the scale. It's designed to capture larger particles — lint, fibers, dust bunnies, and pollen — that would otherwise accumulate inside your blower cabinet and on your evaporator coil. Think of it as equipment protection first, with incidental dust capture as a secondary benefit.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eNominal size: 14 x 18 x 1″\u003c\/li\u003e\n  \u003cli\u003eActual dimensions: 14 x 18 x 3\/4″\u003c\/li\u003e\n  \u003cli\u003eEfficiency rating: MERV 1-4\u003c\/li\u003e\n  \u003cli\u003eQuantity: 12 filters per carton\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eCustomers typically order a 14 x 18 x 1″ custom filter because their system is older, was built by a regional manufacturer, was retrofitted, or was framed on-site by an installer who didn't conform to a standard filter dimension. If that describes your situation, you're in the right place.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOrientation arrow printed on the frame to ensure correct airflow direction at install\u003c\/li\u003e\n  \u003cli\u003eReplace approximately every 90 days in standard installations; shorter intervals in high-dust, smoky, or heavy-use environments\u003c\/li\u003e\n  \u003cli\u003eCardboard frame with reinforced media for structural stability during handling and installation\u003c\/li\u003e\n  \u003cli\u003ePleated construction (or fiberglass, depending on MERV tier) designed for balanced capture and airflow\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:15px;font-weight:bold;color:#1E2D7D;margin:0 0 12px 0;\"\u003eSame 14 x 18 x 1″ size, different efficiency rating\u003c\/p\u003e\u003ctable width=\"100%\" cellpadding=\"0\" cellspacing=\"8\" style=\"border-collapse:separate;margin:18px 0 0 0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/14x18x1-exact-pleated-merv-8-filters-12-pack\" style=\"display:block;background-color:#007B6B;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 14 x 18 x 1″ filter in MERV 8\" title=\"See the 14 x 18 x 1″ filter in MERV 8\"\u003eMERV 8\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eStandard efficiency\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/14x18x1-exact-pleated-merv-11-filters-12-pack\" style=\"display:block;background-color:#6B3FA0;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 14 x 18 x 1″ filter in MERV 11\" title=\"See the 14 x 18 x 1″ filter in MERV 11\"\u003eMERV 11\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eEnhanced efficiency\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/14x18x1-exact-pleated-merv-13-filters-12-pack\" style=\"display:block;background-color:#C8102E;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 14 x 18 x 1″ filter in MERV 13\" title=\"See the 14 x 18 x 1″ filter in MERV 13\"\u003eMERV 13\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eHighest efficiency\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ctable width=\"100%\" cellpadding=\"0\" cellspacing=\"0\" border=\"0\" style=\"border-collapse:separate;margin:24px 0 0 0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd style=\"background-color:#1E2D7D;border-radius:8px;padding:22px 24px;vertical-align:top;\"\u003e\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:18px;font-weight:bold;color:#ffffff;margin:0 0 8px 0;line-height:1.3;\"\u003eNeed 14 x 18 x 2″ or another depth?\u003c\/p\u003e\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:14px;color:#ffffff;margin:0 0 16px 0;line-height:1.55;opacity:0.95;\"\u003eThis size is available in other depths we don't stock online — reach out and our team will quote it for you, typically same business day.\u003c\/p\u003e\n\u003ctable cellpadding=\"0\" cellspacing=\"10\" border=\"0\" style=\"border-collapse:separate;margin:0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"padding:0;vertical-align:top;\"\u003e\u003ca href=\"tel:+18664698556\" style=\"display:block;background-color:#007B6B;color:#ffffff;text-decoration:none;padding:14px 22px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:16px;line-height:1.2;text-align:center;box-sizing:border-box;white-space:nowrap;\"\u003eCall 866-469-8556\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:0;vertical-align:top;\"\u003e\u003ca href=\"\/pages\/contact-us\" style=\"display:block;background-color:#ffffff;color:#1E2D7D;text-decoration:none;padding:14px 22px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:16px;line-height:1.2;text-align:center;box-sizing:border-box;white-space:nowrap;\"\u003eContact us for a quote\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Exact Filters","offers":[{"title":"Default Title","offer_id":44084706246778,"sku":"10055-01299 14 x 18 x 1 E","price":174.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/ExactM1_1268x1134_ae6d4bce-dfab-4d3d-9ad7-42e81085c25c.jpg?v=1749317594"},{"product_id":"14x18x1-exact-pleated-merv-11-filters-12-pack","title":"14x18x1 Exact Filters Pleated MERV 11 (12 pack)","description":"\u003cp\u003eBuilt to order in the precise 14 x 18 x 1″ dimension you need, this Exact Filters® air filter solves a problem standard catalogs can't — a true custom fit for systems that don't accept common filter sizes.\u003c\/p\u003e\n\n\u003cp\u003eA properly fitting filter seals against the housing, so all return air is forced through the media instead of leaking around the frame.\u003c\/p\u003e\n\n\u003cp\u003eMERV 11 sits in the sweet spot for \"upgraded\" filtration: substantially better particle capture than MERV 8, without the static-pressure concerns that come with MERV 13 on older or undersized systems. It's the rating we recommend most often to customers asking \"what should I step up to?\"\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eNominal size: 14 x 18 x 1″\u003c\/li\u003e\n  \u003cli\u003eActual dimensions: 14 x 18 x 3\/4″\u003c\/li\u003e\n  \u003cli\u003eEfficiency rating: MERV 11\u003c\/li\u003e\n  \u003cli\u003eQuantity: 12 filters per carton\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe 14 x 18 x 1″ dimension is one of the many non-standard sizes we make on demand, serving both retrofit installations in older homes and light-commercial properties where the return housing dates to an older era of HVAC construction.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePleated construction (or fiberglass, depending on MERV tier) designed for balanced capture and airflow\u003c\/li\u003e\n  \u003cli\u003eCardboard frame with reinforced media for structural stability during handling and installation\u003c\/li\u003e\n  \u003cli\u003eReplace approximately every 90 days in standard installations; shorter intervals in high-dust, smoky, or heavy-use environments\u003c\/li\u003e\n  \u003cli\u003eOrientation arrow printed on the frame to ensure correct airflow direction at install\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:15px;font-weight:bold;color:#1E2D7D;margin:0 0 12px 0;\"\u003eSame 14 x 18 x 1″ size, different efficiency rating\u003c\/p\u003e\u003ctable width=\"100%\" cellpadding=\"0\" cellspacing=\"8\" style=\"border-collapse:separate;margin:18px 0 0 0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/14x18x1-exact-ez-flow-basic-merv-4-filters-12-pack\" style=\"display:block;background-color:#000000;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 14 x 18 x 1″ filter in MERV 1-4\" title=\"See the 14 x 18 x 1″ filter in MERV 1-4\"\u003eMERV 1-4\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eBasic dust-stop\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/14x18x1-exact-pleated-merv-8-filters-12-pack\" style=\"display:block;background-color:#007B6B;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 14 x 18 x 1″ filter in MERV 8\" title=\"See the 14 x 18 x 1″ filter in MERV 8\"\u003eMERV 8\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eStandard efficiency\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/14x18x1-exact-pleated-merv-13-filters-12-pack\" style=\"display:block;background-color:#C8102E;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 14 x 18 x 1″ filter in MERV 13\" title=\"See the 14 x 18 x 1″ filter in MERV 13\"\u003eMERV 13\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eHighest efficiency\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ctable width=\"100%\" cellpadding=\"0\" cellspacing=\"0\" border=\"0\" style=\"border-collapse:separate;margin:24px 0 0 0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd style=\"background-color:#1E2D7D;border-radius:8px;padding:22px 24px;vertical-align:top;\"\u003e\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:18px;font-weight:bold;color:#ffffff;margin:0 0 8px 0;line-height:1.3;\"\u003eNeed 14 x 18 x 2″ or another depth?\u003c\/p\u003e\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:14px;color:#ffffff;margin:0 0 16px 0;line-height:1.55;opacity:0.95;\"\u003eThis size is available in other depths we don't stock online — reach out and our team will quote it for you, typically same business day.\u003c\/p\u003e\n\u003ctable cellpadding=\"0\" cellspacing=\"10\" border=\"0\" style=\"border-collapse:separate;margin:0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"padding:0;vertical-align:top;\"\u003e\u003ca href=\"tel:+18664698556\" style=\"display:block;background-color:#007B6B;color:#ffffff;text-decoration:none;padding:14px 22px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:16px;line-height:1.2;text-align:center;box-sizing:border-box;white-space:nowrap;\"\u003eCall 866-469-8556\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:0;vertical-align:top;\"\u003e\u003ca href=\"\/pages\/contact-us\" style=\"display:block;background-color:#ffffff;color:#1E2D7D;text-decoration:none;padding:14px 22px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:16px;line-height:1.2;text-align:center;box-sizing:border-box;white-space:nowrap;\"\u003eContact us for a quote\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Exact Filters","offers":[{"title":"Default Title","offer_id":20121920635002,"sku":"85655-01299 14 x 18 x 1 E","price":247.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/ExactM11_1400x1400_d00a6010-7162-403c-bd74-1f3b407214b9.jpg?v=1749241566"},{"product_id":"14x18x1-exact-pleated-merv-13-filters-12-pack","title":"14x18x1 Exact Filters Pleated MERV 13 (12 pack)","description":"\u003cp\u003eThis air filter is made to a 14 x 18 x 1″ nominal size for HVAC systems, air handlers, and return grilles that require an exact custom dimension rather than a standard retail size.\u003c\/p\u003e\n\n\u003cp\u003eFilter bypass — air slipping past a loose frame instead of through the pleats — is one of the most common reasons a filter underperforms its MERV rating in the real world. A precise fit closes that gap.\u003c\/p\u003e\n\n\u003cp\u003eMERV 13 targets the fine particulate fraction that lower MERV ratings allow through — including smoke, bacteria-carrying dust, and combustion byproducts. Airflow resistance is higher than MERV 8 or 11, so systems with borderline static pressure should be evaluated before switching up.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eNominal size: 14 x 18 x 1″\u003c\/li\u003e\n  \u003cli\u003eActual dimensions: 14 x 18 x 3\/4″\u003c\/li\u003e\n  \u003cli\u003eEfficiency rating: MERV 13\u003c\/li\u003e\n  \u003cli\u003eQuantity: 12 filters per carton\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eCommon applications for a 14 x 18 x 1″ custom filter include retrofit installations, legacy HVAC systems installed before standard sizes were codified, built-in return grilles that were framed to non-standard dimensions, and commercial unit housings that don't match any current off-the-shelf size.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePleated construction (or fiberglass, depending on MERV tier) designed for balanced capture and airflow\u003c\/li\u003e\n  \u003cli\u003eSold as a 12-pack so you have a full year of replacements on hand\u003c\/li\u003e\n  \u003cli\u003eMade to your exact 14 x 18 x 1″ specification — no trimming or taping required at installation\u003c\/li\u003e\n  \u003cli\u003eSuitable for forced-air furnaces, central AC, heat pumps, and packaged HVAC systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:15px;font-weight:bold;color:#1E2D7D;margin:0 0 12px 0;\"\u003eSame 14 x 18 x 1″ size, different efficiency rating\u003c\/p\u003e\u003ctable width=\"100%\" cellpadding=\"0\" cellspacing=\"8\" style=\"border-collapse:separate;margin:18px 0 0 0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/14x18x1-exact-ez-flow-basic-merv-4-filters-12-pack\" style=\"display:block;background-color:#000000;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 14 x 18 x 1″ filter in MERV 1-4\" title=\"See the 14 x 18 x 1″ filter in MERV 1-4\"\u003eMERV 1-4\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eBasic dust-stop\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/14x18x1-exact-pleated-merv-8-filters-12-pack\" style=\"display:block;background-color:#007B6B;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 14 x 18 x 1″ filter in MERV 8\" title=\"See the 14 x 18 x 1″ filter in MERV 8\"\u003eMERV 8\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eStandard efficiency\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/14x18x1-exact-pleated-merv-11-filters-12-pack\" style=\"display:block;background-color:#6B3FA0;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 14 x 18 x 1″ filter in MERV 11\" title=\"See the 14 x 18 x 1″ filter in MERV 11\"\u003eMERV 11\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eEnhanced efficiency\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ctable width=\"100%\" cellpadding=\"0\" cellspacing=\"0\" border=\"0\" style=\"border-collapse:separate;margin:24px 0 0 0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd style=\"background-color:#1E2D7D;border-radius:8px;padding:22px 24px;vertical-align:top;\"\u003e\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:18px;font-weight:bold;color:#ffffff;margin:0 0 8px 0;line-height:1.3;\"\u003eNeed 14 x 18 x 2″ or another depth?\u003c\/p\u003e\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:14px;color:#ffffff;margin:0 0 16px 0;line-height:1.55;opacity:0.95;\"\u003eThis size is available in other depths we don't stock online — reach out and our team will quote it for you, typically same business day.\u003c\/p\u003e\n\u003ctable cellpadding=\"0\" cellspacing=\"10\" border=\"0\" style=\"border-collapse:separate;margin:0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"padding:0;vertical-align:top;\"\u003e\u003ca href=\"tel:+18664698556\" style=\"display:block;background-color:#007B6B;color:#ffffff;text-decoration:none;padding:14px 22px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:16px;line-height:1.2;text-align:center;box-sizing:border-box;white-space:nowrap;\"\u003eCall 866-469-8556\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:0;vertical-align:top;\"\u003e\u003ca href=\"\/pages\/contact-us\" style=\"display:block;background-color:#ffffff;color:#1E2D7D;text-decoration:none;padding:14px 22px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:16px;line-height:1.2;text-align:center;box-sizing:border-box;white-space:nowrap;\"\u003eContact us for a quote\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Exact Filters","offers":[{"title":"Default Title","offer_id":20126001070202,"sku":"90013-01299 14 x 18 x 1 E","price":253.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/ExactM13_1400x1400_faa04231-8b42-4ee0-aeb9-a720ee9a6aaf.jpg?v=1749249459"},{"product_id":"14x18x1-naturalaire-standard-merv-8-filters-12-pack","title":"14x18x1 NaturalAire Standard MERV 8 84858.011418 (12 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e14″ × 18″ × 1″\u003c\/strong\u003e listing (part number \u003cstrong\u003e84858.011418\u003c\/strong\u003e) of the \u003cstrong\u003eNaturalAire Standard\u003c\/strong\u003e pleated air filter delivers \u003cstrong\u003eMERV 8\u003c\/strong\u003e filtration and ships as a case of \u003cstrong\u003e12 filters\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIndividually sealed.\u003c\/strong\u003e Every NaturalAire filter ships individually wrapped inside the case — each filter protected from dust, moisture, and shipping damage until you're ready to install it. A real quality difference from bulk-packed competitors, and it matters especially for customers reordering a case at a time.\u003c\/p\u003e\n\u003ch3\u003eMERV 8 — standard efficiency\u003c\/h3\u003e\n\u003cp\u003eMERV 8 is the baseline for good residential and light commercial filtration: effective against household dust, lint, larger pollens, and dust-mite debris — with low pressure drop so it protects airflow and coil performance. It's the right choice when system protection and clean returns are the goal, not allergen-level filtration.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Pleated polyester synthetic media, metal-reinforced, bonded directly to the frame. Mechanical capture — performance doesn't fade with age.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Clay-coated recyclable moisture-resistant beverage-board with wire-mesh support. Bonded pleats prevent air bypass.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 180°F (82°C)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eStandard residential furnaces and central air systems, light commercial HVAC, and apartment\/multi-family installations. Captures dust, lint, pollen, pet dander, mold spores, and dust-mite debris.\u003c\/p\u003e\n\u003ch3\u003eReplacement schedule\u003c\/h3\u003e\n\u003cp\u003eAt 1″ depth, plan to replace this filter \u003cstrong\u003eevery 60–90 days\u003c\/strong\u003e under typical residential or light commercial loading. High-dust environments, pet homes, wildfire smoke events, or construction-adjacent sites will shorten that window. Check the filter monthly through the first cycle to calibrate your schedule.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-8-pleated-air-filters-12-pack\"\u003ePrimeShield Essential (MERV 8)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":20292790091898,"sku":"84858-011418","price":248.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/naturalaire_standard_12pack_9186ab7d-b046-4ae8-bb05-2fde41a85c57.jpg?v=1720567498"},{"product_id":"14x18x1-naturalaire-healthy-ultra-merv-13-filters-12-pack","title":"14x18x1 NaturalAire Healthy Ultra MERV 13 95003.011418 (12 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e14″ × 18″ × 1″\u003c\/strong\u003e listing (part number \u003cstrong\u003e95003.011418\u003c\/strong\u003e) of the \u003cstrong\u003eNaturalAire Healthy Ultra\u003c\/strong\u003e pleated air filter delivers \u003cstrong\u003eMERV 13\u003c\/strong\u003e filtration and ships as a case of \u003cstrong\u003e12 filters\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIndividually sealed.\u003c\/strong\u003e Every NaturalAire filter ships individually wrapped inside the case — each filter protected from dust, moisture, and shipping damage until you're ready to install it. A real quality difference from bulk-packed competitors, and it matters especially for customers reordering a case at a time.\u003c\/p\u003e\n\u003ch3\u003eWhat MERV 13 captures\u003c\/h3\u003e\n\u003cp\u003eVery fine particles including smoke, bacteria-sized particles, and virus carriers attached to larger droplets, on top of everything MERV 11 captures. Commonly specified for commercial spaces with higher indoor-air-quality requirements and for homes with wildfire smoke or air-quality concerns. Ensure your HVAC system is rated for the increased static pressure.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Multi-layer electret-free synthetic pleated media designed to capture fine particles including smoke and bacteria-sized particulates. Mechanical capture.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Clay-coated moisture-resistant beverage-board with wire-mesh media support.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 180°F (82°C)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eResidential and commercial HVAC where MERV 13 is specified — including households responding to wildfire smoke, allergy\/asthma concerns, or higher indoor-air-quality requirements. Confirm your HVAC system is rated for the increased static pressure.\u003c\/p\u003e\n\u003ch3\u003eReplacement schedule\u003c\/h3\u003e\n\u003cp\u003eAt 1″ depth, plan to replace this filter \u003cstrong\u003eevery 60–90 days\u003c\/strong\u003e under typical residential or light commercial loading. High-dust environments, pet homes, wildfire smoke events, or construction-adjacent sites will shorten that window. Check the filter monthly through the first cycle to calibrate your schedule.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":20292791664762,"sku":"95003-011418","price":297.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/naturalaire_merv13_12pack_d077509a-7476-4019-94cc-e990764ca5d1.jpg?v=1720568256"},{"product_id":"14x18x1-nested-glass-ez-green-filters-10057-011418-24-filters","title":"14x18x1 Flanders Nested Glass EZ-Green Filter 10057.011418 (24 Filters)","description":"\u003cp\u003eThe \u003cstrong\u003eFlanders Nested Glass EZ-Green\u003c\/strong\u003e 14″ × 18″ × 1″ is a fiberglass panel filter with nested media layers that increase dust-holding capacity over standard spun-glass panels — while keeping the same low pressure drop and high airflow characteristics.\u003c\/p\u003e\n\u003ch3\u003eUnderstanding the MERV 1–4 rating\u003c\/h3\u003e\n\u003cp\u003eFiberglass media is rated \u003cstrong\u003eMERV 1 when clean and builds up to MERV 4\u003c\/strong\u003e as dust loads onto the fibers. That's not inconsistency — it's how spun-glass media works. A fresh filter lets the most air through while still blocking larger debris; as dust collects, the media becomes more efficient at catching finer particles. The goal of a MERV 1–4 filter isn't air quality — it's \u003cstrong\u003eequipment protection with maximum airflow\u003c\/strong\u003e. It keeps lint, hair, and large dust out of your coil and blower, which is exactly what older systems, high-airflow applications, and pre-filter duty need.\u003c\/p\u003e\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Nested layers of continuous-filament fiberglass with gradient density for progressive dust capture.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Heavy chipboard, one-piece moisture-resistant.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eService life:\u003c\/strong\u003e Up to 60 days under typical use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-1-4-fiberglass-panel-basic-air-filters-12-pack\"\u003ePrimeShield MAX Airflow (MERV 1–4)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":39702579511418,"sku":"10057-011418","price":114.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/products\/510Evh6ihLL_d2437a6a-7115-43d8-a998-6bcf1bef3e63.jpg?v=1643928504"},{"product_id":"14x18x1-naturalaire-microparticle-merv-10-filters-85156-011418-6-pack","title":"14x18x1 NaturalAire Microparticle MERV 10 85256.011418 (6 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e14″ × 18″ × 1″\u003c\/strong\u003e listing (part number \u003cstrong\u003e85256.011418\u003c\/strong\u003e) of the \u003cstrong\u003eNaturalAire Microparticle\u003c\/strong\u003e pleated air filter delivers \u003cstrong\u003eMERV 10\u003c\/strong\u003e filtration and ships as a case of \u003cstrong\u003e6 filters\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIndividually sealed.\u003c\/strong\u003e Every NaturalAire filter ships individually wrapped inside the case — each filter protected from dust, moisture, and shipping damage until you're ready to install it. A real quality difference from bulk-packed competitors, and it matters especially for customers reordering a case at a time.\u003c\/p\u003e\n\u003ch3\u003eWhat MERV 10 captures\u003c\/h3\u003e\n\u003cp\u003eFiner household dust, most pollen, mold spores, pet dander, and larger bacteria-sized particles — a practical step up for allergy-sensitive homes, wildfire-smoke regions, and light commercial spaces. Mechanical (not electrostatic) capture means performance doesn't fade as the filter loads.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Microparticle pleated synthetic media with enhanced surface area. Mechanical capture — performance doesn't fade with age.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Clay-coated recyclable moisture-resistant beverage-board with wire-mesh media support.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 180°F (82°C)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eResidential and light commercial HVAC where MERV 10 filtration is wanted for allergy sensitivity, pet dander, mold spores, or finer dust capture — without the pressure drop of MERV 13.\u003c\/p\u003e\n\u003ch3\u003eReplacement schedule\u003c\/h3\u003e\n\u003cp\u003eAt 1″ depth, plan to replace this filter \u003cstrong\u003eevery 60–90 days\u003c\/strong\u003e under typical residential or light commercial loading. High-dust environments, pet homes, wildfire smoke events, or construction-adjacent sites will shorten that window. Check the filter monthly through the first cycle to calibrate your schedule.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-10-pleated-air-filters-12-pack\"\u003ePrimeShield Enhanced (MERV 10)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43624736227450,"sku":"85256-011418","price":127.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/85156FrontFacing_400x_49687ddd-b478-49c9-b838-39d84b30a8bc.png?v=1700021604"},{"product_id":"14x18x1-naturalaire-microparticle-merv-10-filters-85156-011418-12-pack","title":"14x18x1 NaturalAire Microparticle MERV 10 85156.011418 (12 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e14″ × 18″ × 1″\u003c\/strong\u003e listing (part number \u003cstrong\u003e85156.011418\u003c\/strong\u003e) of the \u003cstrong\u003eNaturalAire Microparticle\u003c\/strong\u003e pleated air filter delivers \u003cstrong\u003eMERV 10\u003c\/strong\u003e filtration and ships as a case of \u003cstrong\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 10 captures\u003c\/h3\u003e\n\u003cp\u003eFiner household dust, most pollen, mold spores, pet dander, and larger bacteria-sized particles — a practical step up for allergy-sensitive homes, wildfire-smoke regions, and light commercial spaces. Mechanical (not electrostatic) capture means performance doesn't fade as the filter loads.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Microparticle pleated synthetic media with enhanced surface area. Mechanical capture — performance doesn't fade with age.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Clay-coated recyclable moisture-resistant beverage-board with wire-mesh media support.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax operating temperature:\u003c\/strong\u003e 180°F (82°C)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eResidential and light commercial HVAC where MERV 10 filtration is wanted for allergy sensitivity, pet dander, mold spores, or finer dust capture — without the pressure drop of MERV 13.\u003c\/p\u003e\n\u003ch3\u003eReplacement schedule\u003c\/h3\u003e\n\u003cp\u003eAt 1″ depth, plan to replace this filter \u003cstrong\u003eevery 60–90 days\u003c\/strong\u003e under typical residential or light commercial loading. High-dust environments, pet homes, wildfire smoke events, or construction-adjacent sites will shorten that window. Check the filter monthly through the first cycle to calibrate your schedule.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-10-pleated-air-filters-12-pack\"\u003ePrimeShield Enhanced (MERV 10)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43624736325754,"sku":"85156-011418","price":217.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/naturalaire_microparticle_12pack_62555a90-872f-4fc4-98d7-b9d4a629ee6c.jpg?v=1720567964"},{"product_id":"14x18x1-koch-disposable-fiberglass-panel-274-140-180-12-filters","title":"14x18x1 Koch Disposable Fiberglass Panel Filter 274-140-180 (12 Filters)","description":"\u003cp\u003eThe \u003cstrong\u003eKoch Disposable Fiberglass Panel\u003c\/strong\u003e in 14″ × 18″ × 1″ is a straightforward spun-fiberglass panel filter — the baseline category for HVAC equipment protection. It's built to catch lint, hair, and large debris while letting the system breathe.\u003c\/p\u003e\n\u003ch3\u003eUnderstanding the MERV 1–4 rating\u003c\/h3\u003e\n\u003cp\u003eFiberglass media is rated \u003cstrong\u003eMERV 1 when clean and builds up to MERV 4\u003c\/strong\u003e as dust loads onto the fibers. That's not inconsistency — it's how spun-glass media works. A fresh filter lets the most air through while still blocking larger debris; as dust collects, the media becomes more efficient at catching finer particles. The goal of a MERV 1–4 filter isn't air quality — it's \u003cstrong\u003eequipment protection with maximum airflow\u003c\/strong\u003e. It keeps lint, hair, and large dust out of your coil and blower, which is exactly what older systems, high-airflow applications, and pre-filter duty need.\u003c\/p\u003e\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Continuous-filament spun fiberglass with resinous bonding agent for rigidity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e One-piece heavy chipboard, moisture-resistant.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eService life:\u003c\/strong\u003e 30 days under typical use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen fiberglass makes sense\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eRental properties and budget-conscious residential applications\u003c\/li\u003e\n  \u003cli\u003eLegacy HVAC systems not rated for higher-MERV pressure drop\u003c\/li\u003e\n  \u003cli\u003eCommercial pre-filter duty ahead of a higher-MERV final filter\u003c\/li\u003e\n  \u003cli\u003eHigh-airflow applications where pressure drop is critical\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/Disposable_Panel_Filters.pdf?v=1729024430%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload Koch Fiberglass Panel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-1-4-fiberglass-panel-basic-air-filters-12-pack\"\u003ePrimeShield MAX Airflow (MERV 1–4)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43896639684730,"sku":"274-140-180","price":68.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/koch_disposable_panel_filter_633f95a2-3e54-40c8-ac6b-66e43eb34b63.jpg?v=1731375865"},{"product_id":"14x18x1-koch-disposable-polyester-panel-284-140-180-12-filters","title":"14x18x1 Koch Disposable Polyester Panel Filter 284-140-180 (12 Filters)","description":"\u003cp\u003eThe \u003cstrong\u003eKoch Disposable Polyester Panel\u003c\/strong\u003e filter in 14″ × 18″ × 1″ is a budget-friendly panel filter built for equipment protection and high airflow. Polyester media is tougher and more durable than spun fiberglass — it holds its shape better in high-airflow installations and doesn't shed fibers into the airstream.\u003c\/p\u003e\n\u003ch3\u003eEquipment protection first, filtration second\u003c\/h3\u003e\n\u003cp\u003eLike other MERV 1–4 panel filters, Koch disposable polyester is designed to protect the coil and blower from lint, hair, and large debris — not to filter fine dust or allergens. For allergen-level filtration, step up to a pleated MERV 8 or higher.\u003c\/p\u003e\n\u003ch3\u003eUnderstanding the MERV 1–4 rating\u003c\/h3\u003e\n\u003cp\u003eFiberglass media is rated \u003cstrong\u003eMERV 1 when clean and builds up to MERV 4\u003c\/strong\u003e as dust loads onto the fibers. That's not inconsistency — it's how spun-glass media works. A fresh filter lets the most air through while still blocking larger debris; as dust collects, the media becomes more efficient at catching finer particles. 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 Polyester synthetic panel media with tackified downstream surface for improved particulate retention.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e One-piece moisture-resistant beverage-board.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eService life:\u003c\/strong\u003e 30–60 days under typical use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpec sheet\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/Disposable_Panel_Filters.pdf?v=1729024430%E2%80%B3%20rel=\" noopener target=\"_blank\"\u003eDownload Koch Polyester Panel spec sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-1-4-fiberglass-panel-basic-air-filters-12-pack\"\u003ePrimeShield MAX Airflow (MERV 1–4)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43896641945722,"sku":"284-140-180","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/koch_disposable_panel_filter_fc120f38-9bc6-4e8d-bc5d-36eafe6ae201.jpg?v=1731376329"},{"product_id":"14x18x1-naturalaire-odor-eliminator-filters-with-baking-soda-4-pack","title":"14x18x1 NaturalAire Odor Eliminator with Baking Soda MERV 8 84857.011418 (4 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e14″ × 18″ × 1″\u003c\/strong\u003e listing (part number \u003cstrong\u003e84857.011418\u003c\/strong\u003e) of the \u003cstrong\u003eNaturalAire Odor Eliminator with Baking Soda\u003c\/strong\u003e ships as a 4-pack of individually sealed \u003cstrong\u003eMERV 8\u003c\/strong\u003e pleated filters built to neutralize household odors while protecting your HVAC system.\u003c\/p\u003e\n\n\u003ch3\u003eBaking soda odor neutralization\u003c\/h3\u003e\n\u003cp\u003eThe NaturalAire Odor Eliminator uses the proven odor-absorbing power of baking soda blended into the filter media. As air passes through, the media reduces airborne particulates while the baking soda neutralizes common household odors at the source — pet smells, cooking, smoke residue, and general staleness — instead of just masking them.\u003c\/p\u003e\n\n\u003ch3\u003eMERV 8 — standard residential efficiency\u003c\/h3\u003e\n\u003cp\u003eMERV 8 is the trusted baseline for residential and light commercial filtration. It captures up to 75% of larger airborne particles including household dust and lint, dust-mite debris, pollen, pet dander, mold spores, bacteria carriers, and odor carriers — at a low pressure drop that protects airflow and coil performance.\u003c\/p\u003e\n\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Pleated synthetic media infused with baking soda for combined particulate and odor reduction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Heavy-duty clay-coated beverage board frame — moisture-resistant and stays rigid through the full service life\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupport:\u003c\/strong\u003e Wire backing on the air-leaving side maintains pleat shape and prevents collapse under load\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eService life:\u003c\/strong\u003e Up to 90 days under typical residential conditions\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eUL Classified\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIndividually sealed 4-pack\u003c\/h3\u003e\n\u003cp\u003eEach filter ships in its own protective wrap inside the case. That means a clean, dust-free filter when you open it — and the rest of your supply stays sealed and shelf-ready until the next change.\u003c\/p\u003e\n\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003e1″ residential and light commercial HVAC returns and air handlers. Especially well suited for homes with pets, smokers, frequent cooking, or anyone wanting cleaner-smelling indoor air alongside reliable particulate filtration.\u003c\/p\u003e\n\n\u003ch3\u003eReplacement schedule\u003c\/h3\u003e\n\u003cp\u003eAt 1″ depth, plan to replace every \u003cstrong\u003e60–90 days\u003c\/strong\u003e under typical loading. Pet households, wildfire smoke events, high-cooking environments, and construction-adjacent sites will shorten that window. Check the filter monthly through your first cycle to calibrate your schedule.\u003c\/p\u003e\n\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eNeed MERV 8 particle filtration without the odor neutralization? Our house brand \u003ca href=\"\/products\/merv-8-pleated-air-filters-12-pack\"\u003ePrimeShield Essential (MERV 8)\u003c\/a\u003e is the same efficiency tier at a better value across common sizes. Choose the NaturalAire Odor Eliminator when odor control is the priority.\u003c\/p\u003e\n\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\n","brand":"AAF Flanders","offers":[{"title":"Default Title","offer_id":43897931694202,"sku":"84857-011418","price":62.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/NaturalAire_Odor_Eliminator_LF_web_7778b087-bd68-4fd9-89cd-c8f584e400a5.jpg?v=1777901214"},{"product_id":"14x18x1-max-merv-9-washable-electrostatic-air-filter","title":"14x18x1 PrimeShield WashGuard Metal HVAC Air Filter — Washable \u0026 Reusable","description":"\u003cp\u003eThe \u003cstrong\u003ePrimeShield WashGuard\u003c\/strong\u003e 14″ × 18″ × 1″ metal HVAC filter is our house-brand washable and reusable filter. Rinse it out monthly, let it dry, and reinstall — no consumable to reorder, no box to throw away. Typical service life is \u003cstrong\u003e5–10+ years\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eWashGuard is produced to PrimeShield specifications by one or more partner manufacturers, delivering the same build quality as the top branded washable filters at a better price point.\u003c\/p\u003e\n\u003ch3\u003eWhen to choose WashGuard\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eRental properties where tenants skip filter changes\u003c\/li\u003e\n  \u003cli\u003eCommercial facilities looking to eliminate the ongoing filter-spend line\u003c\/li\u003e\n  \u003cli\u003eHouseholds prioritizing sustainability and waste reduction\u003c\/li\u003e\n  \u003cli\u003ePre-filter duty in multi-stage systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rust-resistant aluminum — holds up to repeated washing without corrosion.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Layered metal mesh — captures lint, hair, and large debris without shedding fibers.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFiltration tier:\u003c\/strong\u003e MERV 1–4 (equipment protection and airflow, not allergen-level filtration).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCare instructions\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eRinse every 30–60 days with warm water from the downstream side\u003c\/li\u003e\n  \u003cli\u003eMild dish detergent for heavy loading\u003c\/li\u003e\n  \u003cli\u003eShake off excess water, let air-dry completely before reinstalling\u003c\/li\u003e\n  \u003cli\u003eNote the airflow-direction arrow before removing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"RTF","offers":[{"title":"Default Title","offer_id":43902483955834,"sku":"MM9141801","price":149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/RTF_washable_1400x1400_300c0eba-f4a5-4864-beed-87cc4914ed78.jpg?v=1759429436"},{"product_id":"14x18x1-exact-pleated-merv-8-standard-filters-12-pack","title":"14x18x1 Exact Filters Pleated MERV 8 (12 pack)","description":"\u003cp\u003eWhen your HVAC system calls for a 14 x 18 x 1″ filter and the standard aisle doesn't carry it, this Exact Filters® unit is cut to your exact 14 x 18 x 1″ spec — no shims, no gaps, no bypass air.\u003c\/p\u003e\n\n\u003cp\u003eFilter bypass — air slipping past a loose frame instead of through the pleats — is one of the most common reasons a filter underperforms its MERV rating in the real world. A precise fit closes that gap.\u003c\/p\u003e\n\n\u003cp\u003eThis MERV 8 pleated filter is built for sites that want better capture than economy fiberglass without pushing the blower to work harder than necessary. It handles the airborne particles most occupants actually notice — dust, pollen, pet dander — while keeping static pressure in a range every standard system can tolerate.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eNominal size: 14 x 18 x 1″\u003c\/li\u003e\n  \u003cli\u003eActual dimensions: 14 x 18 x 3\/4″\u003c\/li\u003e\n  \u003cli\u003eEfficiency rating: MERV 8\u003c\/li\u003e\n  \u003cli\u003eQuantity: 12 filters per carton\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eCustomers typically order a 14 x 18 x 1″ custom filter because their system is older, was built by a regional manufacturer, was retrofitted, or was framed on-site by an installer who didn't conform to a standard filter dimension. If that describes your situation, you're in the right place.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCardboard frame with reinforced media for structural stability during handling and installation\u003c\/li\u003e\n  \u003cli\u003eReplace approximately every 90 days in standard installations; shorter intervals in high-dust, smoky, or heavy-use environments\u003c\/li\u003e\n  \u003cli\u003eOrientation arrow printed on the frame to ensure correct airflow direction at install\u003c\/li\u003e\n  \u003cli\u003eSuitable for forced-air furnaces, central AC, heat pumps, and packaged HVAC systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:15px;font-weight:bold;color:#1E2D7D;margin:0 0 12px 0;\"\u003eSame 14 x 18 x 1″ size, different efficiency rating\u003c\/p\u003e\u003ctable width=\"100%\" cellpadding=\"0\" cellspacing=\"8\" style=\"border-collapse:separate;margin:18px 0 0 0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"width:25.0000%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/14x18x1-exact-ez-flow-basic-merv-4-filters-12-pack\" style=\"display:block;background-color:#000000;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 14 x 18 x 1″ filter in MERV 1-4\" title=\"See the 14 x 18 x 1″ filter in MERV 1-4\"\u003eMERV 1-4\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eBasic dust-stop\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"width:25.0000%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/14x18x1-exact-pleated-merv-8-filters-12-pack\" style=\"display:block;background-color:#6B3FA0;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 14 x 18 x 1″ filter in MERV 10\" title=\"See the 14 x 18 x 1″ filter in MERV 10\"\u003eMERV 10\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eUpgraded efficiency\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"width:25.0000%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/14x18x1-exact-pleated-merv-11-filters-12-pack\" style=\"display:block;background-color:#6B3FA0;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 14 x 18 x 1″ filter in MERV 11\" title=\"See the 14 x 18 x 1″ filter in MERV 11\"\u003eMERV 11\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eEnhanced efficiency\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"width:25.0000%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/14x18x1-exact-pleated-merv-13-filters-12-pack\" style=\"display:block;background-color:#C8102E;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 14 x 18 x 1″ filter in MERV 13\" title=\"See the 14 x 18 x 1″ filter in MERV 13\"\u003eMERV 13\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eHighest efficiency\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ctable width=\"100%\" cellpadding=\"0\" cellspacing=\"0\" border=\"0\" style=\"border-collapse:separate;margin:24px 0 0 0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd style=\"background-color:#1E2D7D;border-radius:8px;padding:22px 24px;vertical-align:top;\"\u003e\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:18px;font-weight:bold;color:#ffffff;margin:0 0 8px 0;line-height:1.3;\"\u003eNeed 14 x 18 x 2″ or another depth?\u003c\/p\u003e\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:14px;color:#ffffff;margin:0 0 16px 0;line-height:1.55;opacity:0.95;\"\u003eThis size is available in other depths we don't stock online — reach out and our team will quote it for you, typically same business day.\u003c\/p\u003e\n\u003ctable cellpadding=\"0\" cellspacing=\"10\" border=\"0\" style=\"border-collapse:separate;margin:0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"padding:0;vertical-align:top;\"\u003e\u003ca href=\"tel:+18664698556\" style=\"display:block;background-color:#007B6B;color:#ffffff;text-decoration:none;padding:14px 22px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:16px;line-height:1.2;text-align:center;box-sizing:border-box;white-space:nowrap;\"\u003eCall 866-469-8556\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:0;vertical-align:top;\"\u003e\u003ca href=\"\/pages\/contact-us\" style=\"display:block;background-color:#ffffff;color:#1E2D7D;text-decoration:none;padding:14px 22px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:16px;line-height:1.2;text-align:center;box-sizing:border-box;white-space:nowrap;\"\u003eContact us for a quote\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Exact Filters","offers":[{"title":"Default Title","offer_id":44234744037498,"sku":"P8S1-140-180 14 x 18 x 1 E","price":191.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/ExactM8_e0c94251-82e8-449c-8998-f90c525b472b.jpg?v=1794426090"}],"url":"https:\/\/www.rememberthefilter.com\/collections\/14x18x1-furnace-and-ac-filters.oembed?page=2","provider":"RememberTheFilter.com","version":"1.0","type":"link"}