Our alternative Honeywell FC40R1136 18x24 grille filter is constructed to fit current return grilles. The grille filter is designed specifically to replace the name brand Honeywell FC40R1136 air grille filter part number. This 18x24 Honeywell FC40R1136 return air grille filter replacements requires a minimum 3 7/8" duct depth. *Trade names are shown for air filter replacement identification purposes only.
- 18 x 24 x 4 nominal size.
- 17 3/4" x 23 3/4" x 3 3/4" actual size.
- Glasfloss Industries brand. Engineered to substitute for the original manufacturer FC40R1136 grille air filter.
- Designed to fit standard Honeywell model FC40R/
MERV tested to ASHRAE classifications.
- 5 air grille filters to a case.