190316 AAF/FLANDERS 84858.01235 23-1/2 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.