{"product_id":"filter-king-16-38x21-5x1-air-filter-4-pack-merv-13-performance","title":"Filter King 16.38x21.5x1 Air Filter 4-Pack - MERV 13 Performance","description":"\u003cp\u003eOur review of the Filter King 16.38x21.5x1 4-pack finds these pleated filters best suited for homeowners who want stronger particle capture without a complicated installation. The single biggest reason to buy is the \u003cstrong\u003eMERV 13\u003c\/strong\u003e rating combined with a pleated design that traps more airborne particles while maintaining airflow; users report noticeable air clarity within a few days. They are fully manufactured in the United States and come in a convenient 4-pack intended for up to 90 days of use per filter when used within recommended replacement intervals.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMERV 13 rating:\u003c\/strong\u003e Captures smaller airborne particles than lower-rated filters to help improve indoor air quality.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePleated construction:\u003c\/strong\u003e Increases surface area so the filter holds more debris and extends service life versus flat media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in USA:\u003c\/strong\u003e Fully manufactured in the United States under EPA establishment 103501-FL-1 for consistent materials and construction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-pack convenience:\u003c\/strong\u003e Supplies multiple replacements so homeowners can keep a fresh filter on hand and follow a 30-90 day change schedule.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy installation:\u003c\/strong\u003e Open, slide and close design makes replacing a 1 in filter fast and tool-free.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe Filter King 16.38x21.5x1 4-pack is ideal for homeowners and renters who want a balance of higher filtration efficiency and easy maintenance; it works well in standard A\/C and furnace housings that accept a 1 in nominal filter. People who notice dust, pet dander or want extra particle removal without complicated aftermarket accessories will appreciate the MERV 13 capture and pleated design.\u003c\/p\u003e\n\u003cp\u003eThis product is less appropriate for systems that require a rigid, thicker filter or for buyers who need an exact nominal sizing guarantee; some customers reported mixed experiences with fit and occasional concerns about sturdiness, so if a rigid metal-backed filter is required for your system, consider a different style.\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 \u003cstrong\u003eMERV 13\u003c\/strong\u003e efficiency captures more airborne particles than basic filters.\u003c\/li\u003e\n\u003cli\u003ePleated media increases dust-holding capacity and can extend the time between changes.\u003c\/li\u003e\n\u003cli\u003eMade in the USA with consistent materials and construction.\u003c\/li\u003e\n\u003cli\u003eEasy, tool-free installation and sold as a convenient 4-pack.\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 the filters can feel less sturdy and may need careful handling during installation.\u003c\/li\u003e\n\u003cli\u003eSize reporting is nominal; a few customers found the fit varied so double-check your cabinet dimensions before buying.\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\u003eRated Size\u003c\/td\u003e\n\u003ctd\u003e16.38 in x 21.5 in x 1 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActual Size\u003c\/td\u003e\n\u003ctd\u003e16.38 in x 21.5 in x 0.75 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMERV Rating\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-pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Manufacture\u003c\/td\u003e\n\u003ctd\u003eMade in USA (EPA Establishment 103501-FL-1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Change Interval\u003c\/td\u003e\n\u003ctd\u003e30 - 90 days for 1 in filters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eFor most homeowners wanting improved indoor air quality, the Filter King 16.38x21.5x1 4-pack is a sensible choice because of its \u003cstrong\u003eMERV 13\u003c\/strong\u003e performance, pleated media and US manufacture. It represents good value for those who follow routine replacement intervals, though buyers should confirm cabinet fit and handle filters carefully because a few users noted sturdiness concerns.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow often should these filters be replaced?\u003c\/strong\u003e\u003cbr\u003eFilter King recommends changing 1 in filters every 30 to 90 days depending on usage and indoor air conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill MERV 13 reduce airflow?\u003c\/strong\u003e\u003cbr\u003eThese pleated filters are designed to trap more particles without significantly impacting airflow in typical residential A\/C and furnace systems, but always check your system requirements.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre these filters made in the United States?\u003c\/strong\u003e\u003cbr\u003eYes, they are fully manufactured in the USA under EPA establishment number 103501-FL-1.\u003c\/p\u003e","brand":"Filter King","offers":[{"title":"Default Title","offer_id":48607629115611,"sku":"B07JCB288N","price":74.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71mXsxonXeL._AC_SL1500.jpg?v=1778391958","url":"https:\/\/gearmusthave.com\/products\/filter-king-16-38x21-5x1-air-filter-4-pack-merv-13-performance","provider":"GearMustHave","version":"1.0","type":"link"}