Filterbuy 13x21.5x1 Air Filter MERV 11 Allergen Defense (4-Pack)

Features

• 13x21.5x1 replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 12.88" x 21.50" x 0.75")
• 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
• High-quality construction features an electrostatically charged, pleated design that captures more harmful particles and prolongs the products lifespan by 3 times that of fiberglass models
• Industrial-grade beverage board frames with dual wire backings outperform standard cardboard designs
• All components are manufactured within the United States and designed with recyclable materials