These compatible filters have the same dimensions as the genuine Honeywell FC100A1052 and are availble in 3 filtering efficienies - MERV 8, 11, and 13.
Actual Dimensions: Approximately 12-3/8" x 19-7/8" x 4-3/8"
Nominal Dimensions: 12.5" x 20" x 5"
Honeywell Enviracaire : F27F1032
Subs for These Part Numbers: FC100A1052, 203722
Recommended Replacement: Every 6-12 months, or under normal operating conditions; more frequently in high dust environments
Other Stock Numbers: DPFW12.5x20x5, DPFW12.5x20x5M11, DPFW12.5x20x5M13, DPFW12.5x20x5OB