FiltersFast Compatible Replacement for Honeywell FC100A1003 MERV 11 Comp. Filter 16" x 20" x 4-3/8" (Actual Size: 15-7/8" x 19 7/8" x 4-3/8") Honeywell FC100A1003 MERV 11 Comp. Filter-16x20x5 Dimensions: 16"x20"x4-3/8" (actual:15-7/8"x19 7/8"x4-3/8") Filter Life: 12 Months (depending on usage and air quality) Includes 2 Filters Made in the USA!