FilterBuy 20x25x5 Honeywell FC100A1037 Compatible Pleated AC Furnace Air Filters (Pack of 2). AFB Silver MERV 8. MERV 8 - filters dust mites and debris. Great for everyday home use. Nominal size 20x25x5. Actual size 20 x 24 3/4 x 4 3/8. Pack of 2 filters. Designed to replace Replacement Honeywell air cleaner F25, Filter #203720. Honeywell F35 & F35R filter # FC35A1027, Honeywell F100 and F150 filter # FC100A1037, and Honeywell F200 filter #FC200E1037. 20x25x5 Honeywell Replacement Furnace Filter / Air Filter - AFB Silver MERV 8 (2 Pack)