• 18x18x1 replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 17.50" x 17.50" x 0.75")
• MERV 13 synthetic media (comparable with MPR 1500 - 1900 & FPR 10) protects homes from bacteria and more by trapping 98% 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