{"product_id":"merv-10-pleated-air-filters-x4-made-in-usa","title":"Glasfloss 19-7\/8 x 21-1\/2 x 1 Air Filters Case of 4 - MERV 10 Upgrade","description":"\u003cp\u003eOur review of the Glasfloss 19-7\/8 x 21-1\/2 x 1 pleated air filters finds them best suited for homeowners and renters who want a straightforward upgrade from basic pleated filters without increasing system resistance. The single biggest reason to buy is the \u003cstrong\u003eMERV 10 filtration with no added pressure drop\u003c\/strong\u003e, which captures more pollen and fine dust than MERV 8 models while keeping HVAC airflow unchanged. Installation is simple and the heavy-duty beverage board frame resists moisture, making these filters a practical choice for routine 30-90 day maintenance cycles.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMERV 10 rating:\u003c\/strong\u003e Provides enhanced capture of pollen, dust and airborne pollutants compared with lower MERV pleats, helping allergy sufferers breathe cleaner air.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo increased resistance:\u003c\/strong\u003e Offers better filtration than MERV 8 without making the HVAC system work harder, preserving airflow and efficiency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePleated synthetic media:\u003c\/strong\u003e The pleated design increases surface area for particle capture while remaining lightweight and durable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpanded metal backing:\u003c\/strong\u003e A supported media layer resists sagging and maintains consistent filtering performance in challenging conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-duty beverage board frame:\u003c\/strong\u003e The rigid frame resists moisture absorption, helping the filter keep its shape and fit over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExact size fit:\u003c\/strong\u003e Measures 19 7\/8 x 21 1\/2 x 7\/8 in to match nominal 1 in openings for direct replacement in compatible units.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis filter set is aimed at people who currently use common MERV 7 or MERV 8 pleated filters and want an easy, no-hassle upgrade to better particle removal without modifying their HVAC system. It is a good pick for households with seasonal allergies or for anyone noticing increased dust and pollen indoors.\u003c\/p\u003e\n\u003cp\u003eThose who need hospital-grade filtration, extremely long service intervals, or a washable permanent filter should look elsewhere; this product is intended as a disposable pleated filter to be replaced every 30-90 days depending on home conditions.\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\u003eImproved particle capture with \u003cstrong\u003eMERV 10\u003c\/strong\u003e while maintaining the same airflow performance as MERV 8.\u003c\/li\u003e\n\u003cli\u003eSturdy construction with expanded metal backing keeps media supported under airflow.\u003c\/li\u003e\n\u003cli\u003eEasy to install and sized to fit listed Carrier, Bryant and Payne air handlers without modification.\u003c\/li\u003e\n\u003cli\u003eResists moisture in the frame so filters stay rigid in humid conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSome customers question value relative to lower-cost filters, so cost per change is a consideration.\u003c\/li\u003e\n\u003cli\u003eDisposable design requires regular replacement every 30-90 days, which may be frequent for some households.\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\u003eGlasfloss\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel series\u003c\/td\u003e\n\u003ctd\u003eZL Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize (exact)\u003c\/td\u003e\n\u003ctd\u003e19 7\/8 x 21 1\/2 x 7\/8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal size\u003c\/td\u003e\n\u003ctd\u003e19 7\/8 x 21 1\/2 x 1 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter type\u003c\/td\u003e\n\u003ctd\u003ePleated synthetic media with expanded metal backing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEfficiency\u003c\/td\u003e\n\u003ctd\u003eMERV 10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack\u003c\/td\u003e\n\u003ctd\u003eCase of 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Glasfloss 19-7\/8 x 21-1\/2 x 1 MERV 10 filters are a sensible upgrade for typical homes that need better particle removal without sacrificing airflow. With sturdy construction, good fit for compatible HVAC units and moisture-resistant frames, they deliver dependable performance and are a practical choice for allergy sufferers who will replace filters on the recommended 30-90 day schedule.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow often should these filters be changed?\u003c\/strong\u003e\u003cbr\u003eThey should be changed every 30-90 days depending on household dust, pets and seasonal conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill these filters fit my Carrier or Bryant unit?\u003c\/strong\u003e\u003cbr\u003eThey are sized to fit the listed models of Carrier, Bryant and Payne air handlers that accept 19 7\/8 x 21 1\/2 x 1 nominal filters.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo these filters reduce HVAC airflow compared to MERV 8?\u003c\/strong\u003e\u003cbr\u003eNo, Glasfloss specifies MERV 10 performance with no increased resistance over typical MERV 8 pleated filters.\u003c\/p\u003e","brand":"Glasfloss","offers":[{"title":"Default Title","offer_id":46696831844571,"sku":"B073DM1S83","price":52.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71UWzBjR80L._AC_SL1200.jpg?v=1745129359","url":"https:\/\/gearmusthave.com\/products\/merv-10-pleated-air-filters-x4-made-in-usa","provider":"GearMustHave","version":"1.0","type":"link"}