{"product_id":"filter-king-21-5x23x1-air-filter-4-pack-merv-13-high-capture","title":"Filter King 21.5x23x1 Air Filter 4-Pack - MERV 13 High Capture","description":"\u003cp\u003eIn this review the Filter King 21.5x23x1 air filter 4-pack is evaluated for homeowners who want stronger particle capture without compromising airflow. The bottom line: this pack is for people seeking a reliable \u003cstrong\u003eMERV 13\u003c\/strong\u003e pleated replacement that is fully manufactured in the United States and designed to remove more airborne particles within days. It is best chosen when filtration is a priority and when you can accommodate the stated actual size of 21.5 in x 23 in x.75 in.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMERV 13 rating:\u003c\/strong\u003e Provides higher-efficiency particle capture for airborne dust, pollen and some fine particles that standard filters miss.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-pack convenience:\u003c\/strong\u003e Supplies multiple replacements so homeowners can keep to a 30 to 90 day replacement schedule without frequent reordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePleated design:\u003c\/strong\u003e Captures more particles while extending filter life compared with flat media filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in USA:\u003c\/strong\u003e Fully manufactured in the United States with materials and construction traceable to EPA establishment 103501-FL-1.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong service interval:\u003c\/strong\u003e Can last up to 90 days depending on household conditions, reducing maintenance visits for many users.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast installation:\u003c\/strong\u003e Simple open, slide and close replacement makes swaps quick and tool-free.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis product is a practical choice for homeowners with central A\/C or furnace systems who want stronger particle removal without a custom-size filter. It suits people concerned about indoor air clarity, those who host allergy sufferers, and anyone preferring products made in the United States.\u003c\/p\u003e\n\u003cp\u003eIt is less well suited for systems that require exact factory dimensions other than the stated actual size of 21.5 in x 23 in x.75 in, or for users needing a thicker 1 in rigid frame; customers with concerns about filter sturdiness should verify fit and consider more rigid-frame options if collapse under heavy airflow is a worry.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-efficiency \u003cstrong\u003eMERV 13\u003c\/strong\u003e media captures more airborne particles than lower-rated filters.\u003c\/li\u003e\n\u003cli\u003eMade in the United States with clear EPA establishment information, which reassures on origin and manufacture.\u003c\/li\u003e\n\u003cli\u003eFour filters per pack support routine replacement intervals and reduce repeat orders.\u003c\/li\u003e\n\u003cli\u003ePleated construction balances capture and airflow, with users reporting noticeable air clarity within days.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSome users report mixed fit and concerns about sturdiness, so measuring and gentle handling are advised.\u003c\/li\u003e\n\u003cli\u003eActual depth is.75 in rather than a full 1 in, which may matter in tight or recessed housings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFilter King\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRating\u003c\/td\u003e\n\u003ctd\u003eMERV 13\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Quantity\u003c\/td\u003e\n\u003ctd\u003e4 filters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Size\u003c\/td\u003e\n\u003ctd\u003e21.5 in x 23 in x 1 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActual Size\u003c\/td\u003e\n\u003ctd\u003e21.5 in x 23 in x.75 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMade\u003c\/td\u003e\n\u003ctd\u003eFully manufactured in the United States (EPA 103501-FL-1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Replacement\u003c\/td\u003e\n\u003ctd\u003eEvery 30 to 90 days (up to 90 days)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Filter King 21.5x23x1 4-pack is a sensible upgrade for homeowners wanting better particle capture and the convenience of multiple replacements. Its \u003cstrong\u003eMERV 13\u003c\/strong\u003e pleated media and Made in USA construction make it a good value for indoor air clarity, provided the.75 in actual thickness and build feel match the system requirements.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these filters true to the listed size?\u003c\/strong\u003e\u003cbr\u003eThey are listed nominally as 21.5 in x 23 in x 1 in but the stated actual thickness is.75 in, so measure your slot before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long do these filters last?\u003c\/strong\u003e\u003cbr\u003eFilter King recommends changing these 1 in filters every 30 to 90 days, and they note the filters can last up to 90 days depending on household conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhere are these filters made?\u003c\/strong\u003e\u003cbr\u003eThese filters are fully manufactured in the United States and reference EPA establishment number 103501-FL-1.\u003c\/p\u003e","brand":"Filter King","offers":[{"title":"Default Title","offer_id":48187950498011,"sku":"B07JBMW752","price":125.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71e7skCVPxL._AC_SL1500.jpg?v=1769398661","url":"https:\/\/gearmusthave.com\/products\/filter-king-21-5x23x1-air-filter-4-pack-merv-13-high-capture","provider":"GearMustHave","version":"1.0","type":"link"}