This is a compatible replacement filter for the Honeywell FC40R1102 return grille filter. It has a MERV 10 rating which allows it to capture unwanted indoor air contaminants like pet dander, dust and pollen. Lasts approximately 6 months depending on use.
Nominal size: 14x14x4-/8
Actual size (without header): 12-1/4 x 12-1/4 x 4-3/8
Actual size (with header): 13-3/4 x 13-3/4 x 4-3/8
Also known as FC40R-1102.