Nordic Pure 16x25x4/16x25x5 (4-3/8 Actual Depth) Honeywell FC100A1029 Replacement MERV 10 Pleated AC Furnace Air Filters, Box of 2 Actual size: 15 3/4 x 24 3/4 x 4 3/8 Measure the actual inside depth of your filter rack to ensure proper fit; Honeywell Replacement filters have a depth of 4 3/8 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