Filterbuy Filterbuy 21.5x26x4 Air Filter MERV 11 Allergen Defense (6-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 21.50 x 26.00 x 4.00 Inches)

description About this item 21.5x26x4 replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 21.50" x 26.00" x 4.00") MERV 11 synthetic media (comparable with MPR 1000 - 1200 & FPR 7) protects homes from pets, allergies, and more by trapping 95% of airborne particles without impacting air flow Electrostatically charged, pleated filters capture more harmful particles, last 3x longer than fiberglass models, and are 100% manufactured within the United States Industrial grade beverage board (recyclable) frames with dual wire backings improve structural integrity and outperform standard cardboard designs If you receive items with a different label, frame, or media than what is pictured, please note that any such alteration is purely cosmetic and your filter will still function exactly as described See more product details