18x18x5 AIRx ALLERGY Honeywell FC40R1185 Replacement Return Grille Filter - MERV 11
18" x 18" x 5" (actual size 17 3/4" X 17 3/4" X 3 3/4")
MERV 11 - Not Manufactured By Honeywell
The replacement for the FC40R Return Grille Filter is a high-efficiency, long-life replacement for return grille applications. It captures a significant amount of the airborne particles in the air that circulate through the filter. (Honeywell recommends allowing a depth of seven inches behind the grille to provide space for the deeper filter and airflow through the filter.) Honeywell recommends changing your filter once a year. It may be necessary to replace it sooner depending on the conditions in your home.
Filter features 1" foam lip around upstream side
. Mounts in most third party return filter grilles (features integral foam gasket around upstream side of filter).
. Provides high-efficiency alternative to one-inch filter.
. Captures particles as small as 0.3 micron.
. Pleated filter for greater media capacity.
. Easy installation. Pre-assembled filter easily inserts into and out of existing return grille.
. New foam gasket provides tighter seal than old die-cut cardboard lip.
. Exclusive frame design nests properly into place.
. Low pressure drop reduces strain on equipment, provides a comfortable air flow and maintains equipment efficiency longer than standard filters.