Nordic Pure 20x20x4/20x20x5 (4-3/8 Actual Depth) Honeywell FC100A1011 Replacement MERV 14 Pleated AC Furnace Air Filters Plus Carbon, Box of 4 Actual Size of Air Filter: 19 5/8 x 19 7/8 x 4 3/8 (19.63 x 19.88 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 Naturally derived charcoal media with activated carbon removes odors from VOCs, cooking, pets and smoke Replacement air filter for Honeywell FC100A1011 and FC200E1019 Made in the USA