Nordic Pure 16x25x4/16x25x5 (4-3/8 Actual Depth) Honeywell FC100A1029 Replacement MERV 15 Pleated AC Furnace Air Filter, Box of 1 Actual Size of Air Filter: 15 3/4 x 24 3/4 x 4 3/8 (15.75 x 24.75 x 4.38) inches All Nordic Pure air filters are electrostatically charged for maximum performance Attracts and captures dust, lint, pollen, bacteria, pet dander, dust mites, mold spores, smoke particles, smog, viruses, coughs and sneezes Replacement air filter for Honeywell FC100A1029 and FC200E1029 Made in the USA