(This can ONLY be used if you have a Return Air Filter Grille with at least a 4" boot or filter box behind it)

(We recommend an FC40R Return Air Grille filter change at least twice per year - September & March. For DIRTY environments or most efficient filtration, you may need to change filters more often...do monthly visual checks for the first few months.)

The FC40R media replacement performs equal to or better than original equipment performance. It delivers up to 98% efficiency on 5 micron and larger particles, effectively reducing dust accumulation on household furniture. The unique face board design lowers initial static pressure, which keeps your system's blowers running at peak efficiency.