{"product_id":"filter-king-25x29x1-air-filter-4-pack-merv-13-performance","title":"Filter King 25x29x1 Air Filter 4-Pack - MERV 13 Performance","description":"\u003cp\u003eOur review of the Filter King 25x29x1 4-pack answers a simple question: is this MERV 13 pleated filter a sensible choice for homeowners who want improved indoor air quality without frequent replacements? The bottom line is that these filters work well for routine HVAC maintenance, offering a high-efficiency MERV 13 rating in a convenient 4-pack and a claimed life up to 90 days. They are fully manufactured in the United States and designed to slide into standard housings, though buyers should note the listed versus actual dimensions before purchase.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eMERV 13 rating:\u003c\/strong\u003e Captures a wide range of airborne particles for noticeably cleaner air within days of installation.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e4-pack value:\u003c\/strong\u003e Provides multiple replacements so homeowners can maintain filtration for several months without repeated orders.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePleated design:\u003c\/strong\u003e The pleats increase surface area to trap more particles while aiming to preserve airflow through the system.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMade in USA:\u003c\/strong\u003e Fully manufactured domestically with materials and construction traceable to an EPA establishment number.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eReplace every 30-90 days:\u003c\/strong\u003e The filters are designed to last up to 90 days but allow flexibility depending on home conditions and system use.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy installation:\u003c\/strong\u003e Open, slide and close installation makes swaps quick for DIY homeowners and service technicians.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis pack is aimed at homeowners and renters with standard 1 in filter slots who want higher-efficiency filtration without specialty models. It is a good fit for people concerned about allergens and fine particles who can accept changing filters as often as recommended.\u003c\/p\u003e\n\u003cp\u003eIt is less suitable for buyers who require precisely matched factory nominal dimensions or those who need a thicker replacement filter; the listed nominal size 25 x 29 x 1 in is advertised but the actual dimension is 24.5 x 28.5 x 0.75 in, so measure your housing before ordering.\u003c\/p\u003e\n\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 MERV 13 efficiency improves indoor air quality for allergy-prone households.\u003c\/li\u003e\n \u003cli\u003eFour filters per pack reduce the frequency of reordering and provide spare replacements.\u003c\/li\u003e\n \u003cli\u003eMade in the USA with a clear EPA establishment reference for manufacturing traceability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eActual size is slightly smaller than nominal, which has led some customers to report fit issues in certain housings.\u003c\/li\u003e\n \u003cli\u003eMixed feedback on build quality means some buyers may find materials less robust than expected.\u003c\/li\u003e\n\u003c\/ul\u003e\n\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\u003e25 x 29 x 1 in\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eActual size\u003c\/td\u003e\n\u003ctd\u003e24.5 x 28.5 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 filters\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eSuggested replacement\u003c\/td\u003e\n\u003ctd\u003e30 - 90 days\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eManufacturing\u003c\/td\u003e\n\u003ctd\u003eMade in USA (EPA establishment 103501-FL-1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eFor most households seeking stronger filtration than basic fiberglass filters, the Filter King 25x29x1 4-pack is a practical, cost-effective option because of its MERV 13 performance and included spare filters. Measure your filter slot first and expect to replace units every 30 to 90 days; those who need exact nominal dimensions or sturdier construction should compare physical dimensions and customer feedback before committing.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these filters truly MERV 13?\u003c\/strong\u003e\u003cbr\u003eYes, the product is sold and described as MERV 13 rated to capture finer airborne particles than lower-rated filters.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the actual size versus the listed size?\u003c\/strong\u003e\u003cbr\u003eThe listed nominal size is 25 x 29 x 1 in, while the measured actual size is 24.5 x 28.5 x 0.75 in, so verify your filter slot before buying.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow often should these be replaced?\u003c\/strong\u003e\u003cbr\u003eManufacturer guidance and product notes recommend changing 1 in filters every 30 to 90 days depending on household conditions and system usage.\u003c\/p\u003e","brand":"Filter King","offers":[{"title":"Default Title","offer_id":48231058768091,"sku":"B0CZM6DGLC","price":82.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71WN115TfVL._AC_SL1500.jpg?v=1770882222","url":"https:\/\/gearmusthave.com\/products\/filter-king-25x29x1-air-filter-4-pack-merv-13-performance","provider":"GearMustHave","version":"1.0","type":"link"}