The return grille filter provides a high-efficiency, long life alternative to a 1 in filter. Our patented design, unique to the industry, captures a significant amount of the airborne particles, in the air that circulates through the filter.
Honeywell Home Return Grille Air Filter, FC40R Series, Disposable Filter, 20 in Width, 20 in Height, 3 in Depth, 10 MERV, 31 to 86 % Filter Efficiency, 0.12 in-WC Initial Resistance, 1150 cfm Air Flow Capacity, 19-3/4 in H x 19-3/4 in W x 4-3/8 in D Actual, -40 to 140 deg F