Filtrete 20x20x4 Ultra Allergen Filter for Honeywell - 2 PACK (19 7/8" x 19 7/8" x 4 5/16)

By: 3MManufacturer Part # NDP02-4IN-2P-2

Size: 20 x 20 x 4-5/16 Fits Models: Honeywell 20x20x4 Media Air Cleaners F25, F35, F100, F150, F200 (FC100A1011).