The Filterbuy 10x24x1 Air Filter MERV 8 Dust Defense is a 4-pack of pleated HVAC AC filters designed for indoor air quality improvement. With a MERV 8 rating, these filters are rated to capture airborne particles and provide cleaner air for your home or office space. The Filterbuy brand is known for producing quality air filters that help reduce dust, pollen, and other allergens from circulating in the air, making it an essential component for maintaining healthy indoor environments. 10x24x1 replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 9.50" x 23.50" x 0.75") MERV 8 synthetic media (comparable with MPR 600 FPR 5) protects homes from mold, pollen, and more while trapping 90% of dust particles without impacting air flow High quality construction features an electrostatically charged design with 14 pleats per foot that captures more harmful particles and lasts 3x longer than fiberglass models (replace every 90 days for best performance) Easy installation beverage board frames with dual wire backings improve structural integrity and outperform standard cardboard designs by resisting extreme temperatures Industrial grade components are 100% manufactured in the United States and designed with recyclable materials