2-pack Original Factory Replacement FC40R1045
14" x 25" x 5" (actual size 13 3/4" X 24 3/4" X 4 3/8")
MERV 8
Replaces older Honeywell model number F35R.
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" lip around upstream side
FEATURES
. Mounts in most third party return filter grilles (features integral 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.
. 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.
Reviewed by 1 customer
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Comments about Honeywell Return Grille Replacement Filter FC40R1045 14" x 25" x 5":
best high level filtration for home use
Service and delivery comments:
excellent source of hard to find filters, quick delivery and good prices on 2 different items.
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Did you know that the nominal size of your air filter is probably not the same as the actual size? Just like measurements on lumber, the actual size of an air filter is usually slightly smaller than the nominal size.
