Nordic Pure 25x25x1 MERV 10 Pleated AC Furnace Air Filter,  Box of 6 Actual Size of Filter: 24-1/2 x 24-1/2 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. MERV 10 furnace air conditioner filters are comparable to HVAC filters with the rating of MPR 1200-1500 or a rating of FPR 7 Made in the USA