Nordic Pure 16x20x4 (3-5/8 Actual Depth) MERV 10 Pleated AC Furnace Air Filters, Box of 2 Actual Size of Filter: 15-1/2 x 19-1/2 x 3-5/8 Outperforms comparable fiberglass, washable, and poly disposable filters Electrostatic air filter captures dust, pollen, dust-mite debris, mold spores, pet dander, and smog Hypoallergenic and antimicrobial pleated electrostatic filter material Made in the USA