Filter Hut's replacement Honeywell FC40R1830 18x30 grille filter is designed to fit standard return air grilles. Our grille air filter is designed specifically to substitute for OEM Honeywell FC40R1830 return air filter part number. This 18x30 Honeywell FC40R1830 return air grille filter replacements requires a minimum 3 7/8" duct depth. *Brand names are used for air filter substitution identification purposes only.
- 18 x 30 x 0 nominal size.
- 17 3/4" x 29 3/4" x 3 3/4" actual size.
- Glasfloss Industries brand. Engineered to replace the OEM FC40R1830 return air filter.
- Designed to fit existing Honeywell model FC40R/
MERV tested to ASHRAE classifications.
- 5 air grille filters in a case.