Our compatible Honeywell FC40R1078 24x24 return grille air filter is constructed to fit current ducts. The return air grille filter is constructed specifically to be compatible with the name brand Honeywell FC40R1078 grille air filter part number. This 24x24 Honeywell FC40R1078 return grille air filter replacements requires a minimum 3 7/8" duct depth. *Trade names are shown for filter substitution identification purposes only.
- 24 x 24 x 4 nominal size.
- 23 3/4" x 23 3/4" x 3 3/4" actual size.
- Accumulair brand. Engineered to substitute for the OEM FC40R1078 return air grille filter.
- Designed to fit existing Honeywell model FC40R/
MERV classified to ASHRAE classifications.
- 5 return air grille filters per case.