{"product_id":"21-1-2x17-1-2x1-exact-pleated-merv-8-filters-12-pack","title":"21-1\/2x17-1\/2x1 Exact Filters Pleated MERV 8 (12 pack)","description":"\u003cp\u003eWhen your HVAC system calls for a 21-1\/2 x 17-1\/2 x 1″ filter and the standard aisle doesn't carry it, this Exact Filters® unit is cut to your exact 21-1\/2 x 17-1\/2 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: 21-1\/2 x 17-1\/2 x 1″\u003c\/li\u003e\n  \u003cli\u003eActual dimensions: 21-1\/2 x 17-1\/2 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\u003eThe 21-1\/2 x 17-1\/2 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\u003eMade to your exact 21-1\/2 x 17-1\/2 x 1″ specification — no trimming or taping required at installation\u003c\/li\u003e\n  \u003cli\u003eReplace approximately every 90 days in standard installations; shorter intervals in high-dust, smoky, or heavy-use environments\u003c\/li\u003e\n  \u003cli\u003eSold as a 12-pack so you have a full year of replacements on hand\u003c\/li\u003e\n  \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 21-1\/2 x 17-1\/2 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\/21-1-2x17-1-2x1-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 21-1\/2 x 17-1\/2 x 1″ filter in MERV 1-4\" title=\"See the 21-1\/2 x 17-1\/2 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\/21-1-2x17-1-2x1-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 21-1\/2 x 17-1\/2 x 1″ filter in MERV 11\" title=\"See the 21-1\/2 x 17-1\/2 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\/21-1-2x17-1-2x1-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 21-1\/2 x 17-1\/2 x 1″ filter in MERV 13\" title=\"See the 21-1\/2 x 17-1\/2 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 21-1\/2 x 17-1\/2 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":44086599680122,"sku":"80055-01399 21 1\/2 x 17 1\/2 x 1 E","price":209.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/ExactM8_edf1e22b-e65e-43bd-b510-619b11967b5d.jpg?v=1749227637","url":"https:\/\/www.rememberthefilter.com\/products\/21-1-2x17-1-2x1-exact-pleated-merv-8-filters-12-pack","provider":"RememberTheFilter.com","version":"1.0","type":"link"}