{"product_id":"17-5x23-5x1-merv-11-air-filter-4-pack-pet-allergy-defense","title":"17.5x23.5x1 MERV 11 Air Filter 4-Pack - Pet \u0026 Allergy Defense","description":"\u003cp\u003eIn this review of the 17.5x23.5x1 MERV 11 4-pack, the bottom line is simple: this set is best for households that want a noticeable reduction in dust and pet allergens without sacrificing airflow. The reviewer found the electrostatically charged media and higher pleat count deliver consistent filtration over a standard 90-day interval, and the sturdy beverage board frame with dual wire backing makes handling and installation easier than flimsy cardboard designs. For anyone with allergies or pets who needs a reliable replacement for a furnace or AC, this filter offers solid performance and durability.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal compatibility:\u003c\/strong\u003e The filters are sized to match typical 17.5x23.5x1 slots (actual size 17.38 in x 23.38 in x 0.75 in) and work with most furnaces, air conditioners, and heat pumps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMERV 11 performance:\u003c\/strong\u003e The synthetic media captures a broad range of allergens and dust while keeping duct resistance low compared with higher restriction filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrostatic pleated media:\u003c\/strong\u003e Media with 14 pleats per ft increases surface area so the filter traps more fine particles and lasts longer than single-layer fiberglass.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable construction:\u003c\/strong\u003e Beverage board frames and dual wire backing resist moisture and bending so the filter holds shape during installation and operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in the USA:\u003c\/strong\u003e Built from industrial-grade recyclable materials in the United States for dependable indoor air quality and consistent manufacturing standards.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis pack is well suited to pet owners and allergy sufferers who want improved dust and dander capture without extensively reducing airflow. It is also a good choice for renters or homeowners who prefer a 3-month replacement schedule and value a sturdier frame for handling and repeated checks.\u003c\/p\u003e\u003cp\u003eThose who should look elsewhere include users with very tight fit slots who need an exact nonstandard dimension, and environments that require hospital-grade or higher-than-MERV-11 filtration for specialized contaminant control.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHigh capture efficiency for common household allergens and dust while maintaining usable airflow.\u003c\/li\u003e\n\u003cli\u003eElectrostatically charged pleated media with 14 pleats per ft increases particle trapping and longevity.\u003c\/li\u003e\n\u003cli\u003eSturdy beverage board frame with dual wire backing improves durability and resists deformation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eActual measurement is 17.38 in x 23.38 in x 0.75 in, which may not fit systems that require an exact alternative size.\u003c\/li\u003e\n\u003cli\u003eSome users report a perception of reduced airflow in older or marginal HVAC systems; check compatibility if airflow is already limited.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\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 efficiency\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\u003eActual size\u003c\/td\u003e\n\u003ctd\u003e17.38 in x 23.38 in x 0.75 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedia\u003c\/td\u003e\n\u003ctd\u003eElectrostatically charged synthetic pleated media\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePleat density\u003c\/td\u003e\n\u003ctd\u003e14 pleats per ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrame\u003c\/td\u003e\n\u003ctd\u003eBeverage board 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\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe 17.5x23.5x1 MERV 11 4-pack is a practical choice for most homes with pets or allergy concerns, offering durable construction and effective particle capture that outperforms basic fiberglass filters. It represents good value for routine 90-day replacement cycles, though buyers should verify the actual 17.38 in x 23.38 in dimensions against their filter slot before ordering.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eHow often should these filters be replaced?\u003c\/strong\u003e\u003cbr\u003eReplace every 90 days for typical use; replace more often if you have heavy pet dander or high dust loads.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill these filters restrict airflow?\u003c\/strong\u003e\u003cbr\u003eThey are designed to balance filtration and airflow at MERV 11, but older or marginal HVAC systems may notice some reduction; confirm compatibility first.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these filters made domestically?\u003c\/strong\u003e\u003cbr\u003eYes, they are manufactured in the United States using industrial-grade recyclable materials.\u003c\/p\u003e","brand":"Filterbuy","offers":[{"title":"Default Title","offer_id":48204651462875,"sku":"B00CJZA35Q","price":43.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81p9ahJOk9L._AC_SL1500_fecd2e30-75fc-4a12-9fce-26f26288bd01.jpg?v=1770364758","url":"https:\/\/gearmusthave.com\/products\/17-5x23-5x1-merv-11-air-filter-4-pack-pet-allergy-defense","provider":"GearMustHave","version":"1.0","type":"link"}