Nordic Pure 16x25x4/16x25x5 (4-3/8 Actual Depth) Honeywell FC100A1029 Replacement MERV 10 Pleated AC Furnace Air Filter, Box of 1 Actual Size: 15-3/4 x 24-3/4 x 4-3/8 Replacement filter for Honeywell FC100A1029 & FC200E1029 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