{"product_id":"24x25x4-merv-11-air-filter-4-pack-pet-allergy-defense","title":"24x25x4 MERV 11 Air Filter 4-Pack - Pet \u0026 Allergy Defense","description":"\u003cp\u003eIn this review the Filterbuy 24x25x4 MERV 11 4-pack is judged as a practical upgrade for homeowners who want stronger particle capture without heavy airflow loss. Our review finds the filters best for people with pets or seasonal allergies because the \u003cstrong\u003eMERV 11\u003c\/strong\u003e synthetic media captures a large portion of household dust and pet dander while still fitting many furnace and HVAC units. The durable beverage board frame and dual wire backing also mean these filters hold up better in warm or humid return ducts than basic cardboard designs.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal compatibility:\u003c\/strong\u003e True 24x25x4 replacements (actual size 23.75 in x 24.75 in x 3.63 in) designed for furnaces, air conditioners, and heat pumps to simplify swapping filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMERV 11 performance:\u003c\/strong\u003e Synthetic media comparable to MPR 1200 and FPR 7 captures up to 95% of larger dust and allergen particulates while maintaining usable airflow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrostatic pleated media:\u003c\/strong\u003e Eight pleats per ft increase filter surface area so microscopic particles are trapped and the filter lasts longer than fiberglass options.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLasting filtration:\u003c\/strong\u003e Media is electrostatically charged and intended to last roughly three times longer than basic fiberglass filters when replaced every 90 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior construction:\u003c\/strong\u003e Beverage board frames with dual wire backing resist warping and higher temperatures better than plain cardboard framed filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in the USA:\u003c\/strong\u003e Built from industrial-grade, recyclable materials and manufactured entirely in the United States for consistent quality control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis 4-pack is a sensible choice for households with pets, allergy sufferers, or anyone who wants to reduce dust and improve indoor air quality without swapping to a high-MERV commercial filter. The pack count and construction make it easy to keep a scheduled 90-day replacement cycle for multiple returns or larger homes.\u003c\/p\u003e\n\u003cp\u003eUsers with non-standard or slightly different duct dimensions should measure before buying, because a few customers report tight fits. Those needing absolute maximum airflow for older low-pressure blower systems or medical-grade filtration should consider alternative products designed specifically for those constraints.\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\u003eEffective \u003cstrong\u003edust removal\u003c\/strong\u003e and allergen capture with MERV 11 media without overly restricting normal household airflow.\u003c\/li\u003e\n\u003cli\u003eDurable beverage board frame and dual wire backing improve longevity and resistance to heat and humidity.\u003c\/li\u003e\n\u003cli\u003eElectrostatic pleats provide more surface area, meaning longer service life versus fiberglass filters.\u003c\/li\u003e\n\u003cli\u003eProudly manufactured in the United States from recyclable materials.\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 (23.75 in x 24.75 in x 3.63 in) may not fit every furnace slot labeled 24x25x4, so measurement is recommended.\u003c\/li\u003e\n\u003cli\u003eSome feedback notes possible reduced airflow in older or marginal HVAC blowers, so check system compatibility.\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\u003eFilterbuy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack count\u003c\/td\u003e\n\u003ctd\u003e4-pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated size\u003c\/td\u003e\n\u003ctd\u003e24x25x4 in (actual 23.75 x 24.75 x 3.63 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter rating\u003c\/td\u003e\n\u003ctd\u003eMERV 11 (comparable to MPR 1200 \u0026amp; FPR 7)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedia type\u003c\/td\u003e\n\u003ctd\u003eElectrostatically charged synthetic pleated media\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eBeverage board frame with dual wire backing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of manufacture\u003c\/td\u003e\n\u003ctd\u003eMade in the USA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Filterbuy 24x25x4 MERV 11 4-pack is a reliable mid-range replacement that balances particle capture and airflow for most homes with pets or allergy concerns. Its sturdy frame and pleated electrostatic media make it good value for regular 90-day maintenance, provided buyers confirm the actual dimensions fit their return slots.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill these fit a slot labeled 24x25x4?\u003c\/strong\u003e\u003cbr\u003eMeasure your filter slot - the actual filter size is 23.75 in x 24.75 in x 3.63 in and will fit most but not all units labeled 24x25x4.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow often should these be replaced?\u003c\/strong\u003e\u003cbr\u003eFor best results replace every 90 days, or more frequently in homes with heavy pet hair or high dust loads.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo these restrict airflow?\u003c\/strong\u003e\u003cbr\u003eThey are designed to balance capture and airflow, but older or low-pressure blowers may notice some restriction; check compatibility if you have a marginal HVAC system.\u003c\/p\u003e","brand":"Filterbuy","offers":[{"title":"Default Title","offer_id":48236749193435,"sku":"B09P25MWTS","price":118.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81o-f1ouFML._AC_SL1500.jpg?v=1770758637","url":"https:\/\/gearmusthave.com\/products\/24x25x4-merv-11-air-filter-4-pack-pet-allergy-defense","provider":"GearMustHave","version":"1.0","type":"link"}