Nordic Pure 16x25x4/16x25x5 (15 3/4 x 24 3/4 x 4 3/8) Honeywell FC100A1029 Replacement Pleated AC Furnace Air Filters MERV 12, Box of 2 Nominal Size: 16-Inch by 25-Inch by 5-Inch Actual Size: 15-3/4-Inch by 24-3/4-Inch by 4-3/8-Inch Nordic Pure brand replacements for Honeywell units Replacements for Honeywell F100F1012, FC100A1026, FC100A1029, FC100C1009 and FC200E1029 MERV 12 filter media to help reduce pollen, pet dander, dust, mold and more