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18x18x5 (17.75x17.75x4.38) MERV 10 Honeywell® Grille Filter
Replacement for Honeywell® model FC40R air filter #FC40R1185
- Nominal size 18" x 18" x 5" (Actual size 17 3/4" x 17 3/4" x 4 3/8")
- 98% efficient filtration media capturing particles as small as 0.3 microns before they can collect on your coils.
- Pleated filter provides Up to twenty times more high-efficient alternative to one-inch filters for greater media capacity.
- No assembly required easily inserts into and out of existing return grille.
- Allow a 6" depth behind grille to provide space for the deeper filter and air flow through filter.
- This product is listed and rated by Underwriters Laboratories as U.L. Class 2.
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