{"title":"4\" Air Filters","description":"\u003cp\u003eFactor Filter™ 4\" standard capacity air filters bring commercial-grade BowTie technology to standard HVAC systems. Superior lifespan compared to conventional 4\" filters.\u003c\/p\u003e","products":[{"product_id":"16x25x4-375-hvac-air-filter-merv-13-standard-capacity-factor-filter™","title":"16X25X4.375 HVAC Air Filter MERV 13 | Factor Filter™","description":"\u003cp style=\"font-size:1.15em;font-weight:600;color:#2a7a2a;margin-bottom:1em;\"\u003eShips free. Built in the USA. As low as $9.13 per filter.\u003c\/p\u003e\n\u003ch3\u003eWhy choose the 16X25X4.375 MERV 13 Factor Filter?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt in the USA\u003c\/strong\u003e - quality-controlled every step of the way\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCaptures 98% of airborne particles 0.3-10 microns\u003c\/strong\u003e - traps bacteria, smoke, virus carriers, fine dust, allergens\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBest for:\u003c\/strong\u003e asthma, severe allergies, maximum filtration\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePleated media construction\u003c\/strong\u003e - more surface area, longer life, better airflow than flat fiberglass filters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectrostatically charged\u003c\/strong\u003e synthetic media for enhanced particle capture\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable moisture-resistant frame\u003c\/strong\u003e - will not warp or collapse\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrue fit\u003c\/strong\u003e - engineered to meet the 16X25X4.375 nominal size standard\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct specs\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNominal size:\u003c\/strong\u003e 16 x 25 x 4.375\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eActual size:\u003c\/strong\u003e 15½ x 24½ x 3⅞\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMERV rating:\u003c\/strong\u003e 13\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e Standard\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Pleated synthetic, electrostatically charged\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Industrial-grade, moisture resistant\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMade in:\u003c\/strong\u003e USA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSold as:\u003c\/strong\u003e Case of 6 filters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen to replace\u003c\/h3\u003e\n\u003cp\u003eFor most homes, replace every \u003cstrong\u003e60-90 days\u003c\/strong\u003e. 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Built in the USA. As low as $7.55 per filter.\u003c\/p\u003e\n\u003ch3\u003eWhy choose the 20X20X4.375 MERV 13 Factor Filter?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt in the USA\u003c\/strong\u003e - quality-controlled every step of the way\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCaptures 98% of airborne particles 0.3-10 microns\u003c\/strong\u003e - traps bacteria, smoke, virus carriers, fine dust, allergens\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBest for:\u003c\/strong\u003e asthma, severe allergies, maximum filtration\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePleated media construction\u003c\/strong\u003e - more surface area, longer life, better airflow than flat fiberglass filters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectrostatically charged\u003c\/strong\u003e synthetic media for enhanced particle capture\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable moisture-resistant frame\u003c\/strong\u003e - will not warp or collapse\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrue fit\u003c\/strong\u003e - engineered to meet the 20X20X4.375 nominal size standard\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct specs\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNominal size:\u003c\/strong\u003e 20 x 20 x 4.375\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eActual size:\u003c\/strong\u003e 19½ x 19½ x 3⅞\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMERV rating:\u003c\/strong\u003e 13\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e Standard\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Pleated synthetic, electrostatically charged\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Industrial-grade, moisture resistant\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMade in:\u003c\/strong\u003e USA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSold as:\u003c\/strong\u003e Case of 6 filters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen to replace\u003c\/h3\u003e\n\u003cp\u003eFor most homes, replace every \u003cstrong\u003e60-90 days\u003c\/strong\u003e. 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Built in the USA. 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If you have pets, allergies, or live in a high-dust area, replace every \u003cstrong\u003e30-60 days\u003c\/strong\u003e for optimal performance.\u003c\/p\u003e\n\u003ch3\u003eFits most HVAC systems\u003c\/h3\u003e\n\u003cp\u003eThis 12X24X4 MERV 8 filter is compatible with the vast majority of residential and commercial HVAC systems, furnaces, and air handlers that use the 12X24X4 nominal size.\u003c\/p\u003e\n\u003cp style=\"margin-top:1.5em;\"\u003e\u003cstrong\u003eFast free shipping on every order.\u003c\/strong\u003e Orders ship within 24 hours.\u003c\/p\u003e","brand":"Factor Filter","offers":[{"title":"MERV 13 (Case of 6)","offer_id":53698500297072,"sku":null,"price":146.99,"currency_code":"USD","in_stock":true},{"title":"MERV 8 (Case of 6)","offer_id":53698500362608,"sku":null,"price":108.99,"currency_code":"USD","in_stock":true},{"title":"MERV 10 (Case of 6)","offer_id":53701252481392,"sku":null,"price":114.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/8747\/1472\/files\/factor-filter-front_97873252-4d80-4f35-89f6-4a0c4d6d30b8.png?v=1777488901"},{"product_id":"16x20x4-hvac-air-filter-factor-filter™","title":"16X20X4 HVAC Air Filter | Factor Filter™","description":"\u003cp style=\"font-size:1.15em;font-weight:600;color:#2a7a2a;margin-bottom:1em;\"\u003eShips free. Built in the USA. As low as $2.93 per filter.\u003c\/p\u003e\n\u003ch3\u003eWhy choose the 16X20X4 MERV 8 Factor Filter?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt in the USA\u003c\/strong\u003e - quality-controlled every step of the way\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCaptures 90% of airborne particles 3-10 microns\u003c\/strong\u003e - traps dust, pollen, mold spores, pet dander, lint\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBest for:\u003c\/strong\u003e everyday residential use, general air quality\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePleated media construction\u003c\/strong\u003e - more surface area, longer life, better airflow than flat fiberglass filters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectrostatically charged\u003c\/strong\u003e synthetic media for enhanced particle capture\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable moisture-resistant frame\u003c\/strong\u003e - will not warp or collapse\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrue fit\u003c\/strong\u003e - engineered to meet the 16X20X4 nominal size standard\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eHigh Capacity construction:\u003c\/strong\u003e More pleats per foot means more surface area, better dust-holding capacity, and longer filter life between changes.\u003c\/p\u003e\n\u003ch3\u003eProduct specs\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNominal size:\u003c\/strong\u003e 16 x 20 x 4\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eActual size:\u003c\/strong\u003e 15½ x 19½ x 3¾\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMERV rating:\u003c\/strong\u003e 8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e High Capacity\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Pleated synthetic, electrostatically charged\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Industrial-grade, moisture resistant\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMade in:\u003c\/strong\u003e USA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSold as:\u003c\/strong\u003e Case of 6 filters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen to replace\u003c\/h3\u003e\n\u003cp\u003eFor most homes, replace every \u003cstrong\u003e60-90 days\u003c\/strong\u003e. 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Built in the USA. As low as $3.33 per filter.\u003c\/p\u003e\n\u003ch3\u003eWhy choose the 16X25X4 MERV 8 Factor Filter?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt in the USA\u003c\/strong\u003e - quality-controlled every step of the way\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCaptures 90% of airborne particles 3-10 microns\u003c\/strong\u003e - traps dust, pollen, mold spores, pet dander, lint\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBest for:\u003c\/strong\u003e everyday residential use, general air quality\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePleated media construction\u003c\/strong\u003e - more surface area, longer life, better airflow than flat fiberglass filters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectrostatically charged\u003c\/strong\u003e synthetic media for enhanced particle capture\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable moisture-resistant frame\u003c\/strong\u003e - will not warp or collapse\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrue fit\u003c\/strong\u003e - engineered to meet the 16X25X4 nominal size standard\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eHigh Capacity construction:\u003c\/strong\u003e More pleats per foot means more surface area, better dust-holding capacity, and longer filter life between changes.\u003c\/p\u003e\n\u003ch3\u003eProduct specs\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNominal size:\u003c\/strong\u003e 16 x 25 x 4\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eActual size:\u003c\/strong\u003e 15½ x 24½ x 3¾\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMERV rating:\u003c\/strong\u003e 8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e High Capacity\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Pleated synthetic, electrostatically charged\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Industrial-grade, moisture resistant\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMade in:\u003c\/strong\u003e USA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSold as:\u003c\/strong\u003e Case of 6 filters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen to replace\u003c\/h3\u003e\n\u003cp\u003eFor most homes, replace every \u003cstrong\u003e60-90 days\u003c\/strong\u003e. 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Built in the USA. 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