Nordic Pure 12x24x1 MERV 10 Pleated AC Furnace Air Filter, Box of 6 Actual Size of Air Filter: 11 1/2 x 23 1/2 x 3/4 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