12x24 x 1 In. Basic Dust & Lint Pleated Furnace Air Filter, Gray, MPR 300, 3 Months (4 pieces)

12" x 24" x 1", Gray, Basic Dust & Lint Filtrete Filter, 3 Month Filter, Electrostatically Charged Fibers Attract & Capture Large Airborne Allergens Like Pollen, Household Dust & Lint, Ideal For High Velocity Heating/Cooling Systems, Performs Better Than Ordinary Fiberglass & Washable 1" Filters, For Residential Use Only, MPR Rating 300, Lasts Up To 3 Months.