Aerostar 13x21 1/2x1 MERV 13 AC Furnace Air Filter, Pleated HVAC Filter, MPR 1900 FPR 10, Allergen Defense, 4-Pack, Made in USA

The Aerostar 13x21.5x1 MERV 13 pleated air filter delivers reliable home air filtration in a convenient 4 pack. This electrostatically charged furnace filter captures 98 percent of airborne microscopic particles including dust, pollen, pet hair, pet dander, mold spores, lint, dust mites, bacteria, and smoke. Designed as a direct replacement for standard 1-inch furnace filters, air conditioner filters, heater filters, and HVAC vent filters, each filter provides 90 days of cleaner indoor air quality and superior allergy and asthma relief. The heavy-duty moisture-resistant frame with reinforced pleats prevents filter collapse and air bypass while maintaining low air flow resistance for energy efficient operation. More effective than standard fiberglass filters. Compatible with Carrier, Bryant, Trane, Lennox, Rheem, Goodman, York, Ruud, and Honeywell central air and forced air heating systems. Comparable to Filtrete MPR 1500 and Honeywell FPR 10. Proudly made in the USA with premium materials in American facilities under strict quality control standards. Replace every 3 months, or sooner in homes with pets or smokers, to protect your HVAC system and maintain optimal air quality. Nominal size 13x21.5x1.