FilterBuy 20x25x5 Goodman Replacement AC Furnace Air Filters - AFB Platinum MERV 13 - Pack of 2 Filters. Designed to replace FS2025, M8-1056, MU2025, 9183970. FilterBuy 20x25x5 Goodman Replacement AC Furnace Air Filters - AFB Platinum MERV 13 - Pack of 2 Filters. Designed to replace FS2025, M8-1056, MU2025, 9183970. Designed to fit air cleaner part #'s GBB2025, GMU2025. Nominal size of 20x25x5. Actual size of 20 1/4" x 25 3/8" x 5 1/4". Manufactured by AFB in the USA, using 100% USA components. Removes bacteria, pollen, dust mites, and mold. Best of breed, hospital grade filter. AirFilterBuy: Breathe Better!