{"title":"4 Inch Air Filters","description":"","products":[{"product_id":"accumulair-white-rodgers-replacement-20x25x4","title":"White-Rodgers 20x25x4","description":"\u003ch4\u003e20x25x4 (19 1\/2 x 24 1\/2 x 3 3\/4)\u003c\/h4\u003e\u003cbr\u003e\u003cb\u003eWhite-Rodgers Part # FR2000M-108 and FR2000M-111\n\u003c\/b\u003e\u003cul\u003e\n\u003cli\u003eGreat for reducing airborne particles such as dust, pollen, mold spores, tobacco smoke, pet dander, and particles that carry viruses.\u003c\/li\u003e\n\u003cli\u003eSuperior frame strength utilizing double-wall construction and die-cut fingers.\u003c\/li\u003e\n\u003cli\u003eHigh-efficiency filter media collects small dust particles before they can collect on your coils.\u003c\/li\u003e\n\u003cli\u003eLasts up to 6 months!\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Filters-NOW","offers":[{"title":"MERV 8","offer_id":43276495880429,"sku":"FB20X25X4=DWR","price":38.29,"currency_code":"USD","in_stock":true},{"title":"MERV 13","offer_id":19769435193401,"sku":"FD20X25X4=DWR","price":55.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0069\/3413\/4841\/files\/fs_wholehouse_face.png?v=1764008198"},{"product_id":"accumulair-white-rodgers-replacement-20x20x4","title":"White-Rodgers 20x20x4","description":"\u003ch4\u003e20x20x4 (19 1\/2 x 19 1\/2 x 3 3\/4)\u003c\/h4\u003e\u003cbr\u003e\u003cb\u003eWhite-Rodgers Part #FR1600M-108 and FR1600M-111\n\u003c\/b\u003e\u003cul\u003e\n\u003cli\u003eGreat for reducing airborne particles such as dust, pollen, mold spores, tobacco smoke, pet dander, and particles that carry viruses.\u003c\/li\u003e\n\u003cli\u003eSuperior frame strength utilizing double-wall construction and die-cut fingers.\u003c\/li\u003e\n\u003cli\u003eHigh-efficiency filter media collects small dust particles before they can collect on your coils.\u003c\/li\u003e\n\u003cli\u003eLasts up to 6 months!\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Filters-NOW","offers":[{"title":"MERV 8","offer_id":43276495847661,"sku":"FB20X20X4=DWR","price":32.43,"currency_code":"USD","in_stock":true},{"title":"MERV 13","offer_id":19769434832953,"sku":"FD20X20X4=DWR","price":49.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0069\/3413\/4841\/files\/fs_wholehouse_face.png?v=1764008198"},{"product_id":"accumulair-white-rodgers-replacement-16x25x4","title":"White-Rodgers 16x25x4","description":"\u003ch4\u003e16x25x4 (15 1\/2 x 24 1\/2 x 3 3\/4)\u003c\/h4\u003e\u003cbr\u003e\u003cb\u003eWhite-Rodgers Part #FR1400M-108 and FR1400M-111\n\u003c\/b\u003e\u003cul\u003e\n\u003cli\u003eGreat for reducing airborne particles such as dust, pollen, mold spores, tobacco smoke, pet dander, and particles that carry viruses.\u003c\/li\u003e\n\u003cli\u003eSuperior frame strength utilizing double-wall construction and die-cut fingers.\u003c\/li\u003e\n\u003cli\u003eHigh-efficiency filter media collects small dust particles before they can collect on your coils.\u003c\/li\u003e\n\u003cli\u003eLasts up to 6 months!\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Filters-NOW","offers":[{"title":"MERV 8","offer_id":43276495814893,"sku":"FB16X25X4=DWR","price":32.42,"currency_code":"USD","in_stock":true},{"title":"MERV 13","offer_id":19769434734649,"sku":"FD16X25X4=DWR","price":49.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0069\/3413\/4841\/files\/fs_wholehouse_face.png?v=1764008198"},{"product_id":"accumulair-white-rodgers-replacement-16x20x4","title":"White-Rodgers 16x20x4","description":"\u003ch4\u003e16x20x4 (15 1\/2 x 19 1\/2 x 3 3\/4)\u003c\/h4\u003e\u003cbr\u003e\u003cb\u003eWhite-Rodgers Part #FR1600M-108 and FR1600M-111\n\u003c\/b\u003e\u003cul\u003e\n\u003cli\u003eGreat for reducing airborne particles such as dust, pollen, mold spores, tobacco smoke, pet dander, and particles that carry viruses.\u003c\/li\u003e\n\u003cli\u003eSuperior frame strength utilizing double-wall construction and die-cut fingers.\u003c\/li\u003e\n\u003cli\u003eHigh-efficiency filter media collects small dust particles before they can collect on your coils.\u003c\/li\u003e\n\u003cli\u003eLasts up to 6 months!\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Filters-NOW","offers":[{"title":"MERV 8","offer_id":43276495782125,"sku":"FB16X20X4=DWR","price":28.02,"currency_code":"USD","in_stock":true},{"title":"MERV 13","offer_id":19769434538041,"sku":"FD16X20X4=DWR","price":49.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0069\/3413\/4841\/files\/fs_wholehouse_face.png?v=1764008198"},{"product_id":"accumulair-lennox-replacement-17x26x4","title":"Lennox 17x26x4","description":"\u003ch4\u003eNominal size 17\" x 26\" x 4\" (Actual size 16 5\/8\" x 26\" x 4 1\/8\").\u003c\/h4\u003e\n\u003cp\u003e\u003cb\u003eAccumulair Filter for Lennox models X6664, X6666, and X7574\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFits Lennox model # PCO-12C and HCFPCO12-10.\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/shop.holtfilters.com\/pages\/filter-ratings-explained#whatismerv\"\u003eWhat is MERV?\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eGreat for reducing airborne particles such as dust, pollen, mold spores, tobacco smoke, pet dander, and particles that carry viruses.\u003c\/li\u003e\n\u003cli\u003eSuperior frame strength utilizing double-wall construction and die-cut fingers.\u003c\/li\u003e\n\u003cli\u003eHigh-efficiency filter media collects small dust particles before they can collect on your coils.\u003c\/li\u003e\n\u003cli\u003eMade in the USA.\u003c\/li\u003e\n\u003cli\u003eLasts up to 6 Months!\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Filters-NOW","offers":[{"title":"MERV 8","offer_id":43276486148333,"sku":"ACM8LEN.17264.2","price":62.19,"currency_code":"USD","in_stock":true},{"title":"MERV 13","offer_id":19769353240633,"sku":"ACM13LEN.17264.2","price":94.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0069\/3413\/4841\/files\/wholehouse_lg_198_976cc243-da49-44cf-8423-7fa4dd140ed4.jpg?v=1703105033"},{"product_id":"test-product-accumulair-gold-merv-8-filter-8x30x4-actual-size","title":"TEST PRODUCT: Accumulair Gold MERV 8 Filter - 8x30x4 (Actual Size)","description":"","brand":"AirFilters.com","offers":[{"title":"Default Title","offer_id":44009900409069,"sku":"FB08X30X4A","price":14.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0069\/3413\/4841\/files\/accumulair_gold_m8artboard_1_ff3e5dc4-33fb-4243-8518-22416a79654a.jpg?v=1721844201"},{"product_id":"16x25x4-air-filter","title":"16x25x4 Air Filter","description":"","brand":"Filter King","offers":[{"title":"MERV 8","offer_id":49098977509613,"sku":"FK16x25x4-M8","price":12.3,"currency_code":"USD","in_stock":true},{"title":"MERV 11","offer_id":49098983178477,"sku":"FK16x25x4-M11","price":14.4,"currency_code":"USD","in_stock":true},{"title":"MERV 13","offer_id":49098983211245,"sku":"FK16x25x4-M13","price":23.46,"currency_code":"USD","in_stock":true},{"title":"Odor Ban","offer_id":49098983244013,"sku":"FK16x25x4-CO","price":40.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0069\/3413\/4841\/files\/ChatGPTImageOct24_2025_08_27_23AM.png?v=1761308862"},{"product_id":"hf-28x30x4-air-filters","title":"28x30x4 Air Filters","description":"\u003cdiv class=\"fs-product-description\"\u003e\n\u003cp\u003eShop replacement air filters available in MERV 10, MERV 11, MERV 13, and Odor Block options. 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Choose your preferred filtration level, order the quantity you need, and save more with volume pricing on larger orders.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Airflow Products","offers":[{"title":"MERV 10","offer_id":50063839822061,"sku":"28x30x4-M10","price":63.99,"currency_code":"USD","in_stock":true},{"title":"MERV 11","offer_id":50063839854829,"sku":"28x30x4-M11","price":74.99,"currency_code":"USD","in_stock":true},{"title":"MERV 13","offer_id":50063839887597,"sku":"28x30x4-M13","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0069\/3413\/4841\/files\/ChatGPT_Image_Jun_1_2026_10_40_44_AM.png?v=1780324884"},{"product_id":"hf-28-1-2x29-1-2x4-air-filters","title":"28-1\/2x29-1\/2x4 Air Filters","description":"\u003cdiv class=\"fs-product-description\"\u003e\n\u003cp\u003eShop replacement air filters available in MERV 10, MERV 11, MERV 13, and Odor Block options. 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Choose your preferred filtration level, order the quantity you need, and save more with volume pricing on larger orders.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Airflow Products","offers":[{"title":"MERV 10","offer_id":50063841132781,"sku":"16x25x4-M10","price":34.99,"currency_code":"USD","in_stock":true},{"title":"MERV 11","offer_id":50063841165549,"sku":"16x25x4-M11","price":40.99,"currency_code":"USD","in_stock":true},{"title":"MERV 13","offer_id":50063841198317,"sku":"16x25x4-M13","price":47.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0069\/3413\/4841\/files\/ChatGPT_Image_Jun_1_2026_10_40_44_AM.png?v=1780324884"},{"product_id":"hf-20x25x4-air-filters","title":"20x25x4 Air Filters","description":"\u003cdiv class=\"fs-product-description\"\u003e\n\u003cp\u003eShop replacement air filters available in MERV 10, MERV 11, MERV 13, and Odor Block options. 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