17.5x23.5x1Pleat Filter

17-1/2" x 23-1/2" x 1", Naturalaire Standard Pleated Air Filter, 100% Synthetic Wire Backed Media, Clay Coated Frame, Merv Rating 8, 90 Day Filter, Effective Against Pollen, Dust/Lint, Dust Mites, Pet Dander, Mold, Bacteria, Virus Carriers.