FilterBuy 16x25x5 Honeywell Aftermarket Replacement Furnace Filter/Air Filter - AFB Gold MERV 11 (2 Pack) FilterBuy 16x25x5 Honeywell Replacement Furnace Filter / Air Filter - AFB Gold MERV 11 (2 Pack) Replacement for Honeywell filter part #'s 203719, FC35A1001, FC100A1026, FC100A1029, FC100C1009, FC200E1011, FC200E1029. Pack of 2 filters. Nominal size 16x25x5. Actual size 15 7/8 x 24 x 4 3/8. MERV 11 - great for pet owners and people with allergies.