{"product_id":"16x25x1-merv-11-4pack","title":"ApexPuri 16×25×1 MERV 11 Air Filter · Allergy + Pet 4-Pack","description":"\u003csection class=\"apex-pdp\"\u003e\n  \u003ch2\u003eWhy MERV 11 for 16×25×1?\u003c\/h2\u003e\n  \u003cp\u003e\u003cem\u003ePet households, allergy season, sensitive sleepers, and homes that want a step up without compromising HVAC airflow. The right upgrade if MERV 8 isn't quite holding the dust line.\u003c\/em\u003e\u003c\/p\u003e\n  \u003col\u003e\n    \u003cli\u003e\u003cstrong\u003eCaptures everything MERV 8 captures, plus fine pet dander, mold spores, and finer pollen — particles down to about 1 micron.\u003c\/strong\u003e\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSame slot as MERV 8.\u003c\/strong\u003e Actual 15½ × 24½ × ¾ in — no install changes if you're upgrading from our MERV 8 in this size.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eReinforced beverage-board frame.\u003c\/strong\u003e Higher MERV doesn't change frame quality — still ~30% thicker than typical cardboard.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eThe particle band where pet-allergy and seasonal-allergy symptoms originate.\u003c\/strong\u003e MERV 11 captures dust, lint, pollen, fine dander (1–3 microns), mold spores, and the smaller fraction of household dust.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAirflow tradeoff:\u003c\/strong\u003e Small increase in static pressure vs MERV 8 — fine for any home built since ~1995.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNot a substitute for HEPA in a sealed room\u003c\/strong\u003e, but it's the sweet spot for whole-home HVAC because it balances finer capture with normal airflow.\u003c\/li\u003e\n  \u003c\/ol\u003e\n\n  \u003ch2\u003eThree ways customers use MERV 11.\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePet households.\u003c\/strong\u003e Two cats, one shedder. MERV 8 wasn't keeping up with dander. MERV 11 at 60-day cadence finally drops the dust on the coffee table.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAllergy seasons.\u003c\/strong\u003e Install 2 weeks before local pollen peak. Mornings feel less stuffy within the first week. Step back to MERV 8 in fall if winter is dry.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMild asthma households.\u003c\/strong\u003e Capturing the 1–3 micron band reduces airborne triggers. For severe asthma, consider MERV 13 with HVAC verification.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eSpecifications\u003c\/h2\u003e\n  \u003ctable\u003e\n    \u003ctr\u003e\n\u003cth\u003eNominal size\u003c\/th\u003e\n\u003ctd\u003e16×25×1 in\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eActual size (verified)\u003c\/th\u003e\n\u003ctd\u003e\u003cstrong\u003e15.50 × 24.50 × 0.75 in\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eMERV rating\u003c\/th\u003e\n\u003ctd\u003eMERV 11\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eEquivalent retail tier\u003c\/th\u003e\n\u003ctd\u003e~MPR 1000–1200 · FPR 7\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCapture range\u003c\/th\u003e\n\u003ctd\u003eParticles 1–10 microns: dust, lint, pollen, pet dander, mold spores\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePressure drop (clean)\u003c\/th\u003e\n\u003ctd\u003e~0.10 in. w.g. — small increase vs MERV 8\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eMedia\u003c\/th\u003e\n\u003ctd\u003eElectrostatic pleated synthetic, denser pleat count vs MERV 8\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eFrame\u003c\/th\u003e\n\u003ctd\u003eReinforced beverage-board, double-fold corners\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eRecommended life\u003c\/th\u003e\n\u003ctd\u003e~60 days for pet\/allergy homes; 90 days for general use\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePack quantity\u003c\/th\u003e\n\u003ctd\u003e4 filters\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003eAP-16-25-1-M11-4\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eHVAC compatibility\u003c\/th\u003e\n\u003ctd\u003eCompatible with virtually all residential HVAC built since ~1995\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\n  \u003ch2\u003eMERV 11 FAQ\u003c\/h2\u003e\n  \u003cdetails open\u003e\u003csummary\u003e\u003cstrong\u003eWhen should I upgrade from MERV 8 to MERV 11?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eWhen you have one or more pets, anyone in the household has mild seasonal allergies, or you notice fine dust building up on horizontal surfaces between weekly cleans despite a MERV 8 in the slot.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWill MERV 11 strain my HVAC?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eFor homes built since approximately 1995 with adequately sized ducts, no. The static pressure increase from MERV 8 to MERV 11 is small enough that most blowers don't notice. If you have an older system, monitor for longer run times for the first 2 weeks.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eShould I keep MERV 11 year-round or just during allergy season?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eEither works. Year-round is simpler logistics. Seasonal (MERV 11 spring + fall, MERV 8 winter) is slightly cheaper. Pet households should run MERV 11 year-round since dander load is constant.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eDoes MERV 11 eliminate pet dander completely?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eNot completely — dander also lives on surfaces, bedding, and clothes. MERV 11 substantially reduces airborne dander; combine with weekly bedding wash and HEPA vacuum for the full picture.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eIs MERV 11 the same as HEPA?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eNo. HEPA filters are MERV 17+ and capture 99.97% of 0.3-micron particles, but they require dedicated air handlers (most home HVAC blowers can't push enough air through HEPA). MERV 11 is the upper middle of residential pleated capture.\u003c\/p\u003e\u003c\/details\u003e\n\n  \u003cp\u003e\u003ca href=\"\/blogs\/learn\/best-air-filters-pet-homes-2026\"\u003e→ Best Air Filters for Pet Homes\u003c\/a\u003e · \u003ca href=\"\/pages\/merv-guide\"\u003e→ Open MERV Guide\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/section\u003e","brand":"ApexPuri","offers":[{"title":"Default Title","offer_id":51852131205252,"sku":"AP-16-25-1-M11-4","price":33.73,"currency_code":"USD","in_stock":false}],"url":"https:\/\/apexpuri.com\/products\/16x25x1-merv-11-4pack","provider":"APEX PURI","version":"1.0","type":"link"}