When installed into your home's ceiling or wall return grilles, Resideo's High-Performance Return Grille Filters provide superior air filtration that's up to 10 times more effective than standard one-inch filters. It helps trap airborne dust, pollen, mold spores, bacteria and other allergens that pass through your HVAC system. It also lasts up to three times longer than standard one-inch filters, which mean less maintenance for improved indoor air quality.
Honeywell Home Return Grille Media Air Filter, Model: FC-40R, Disposable/Pleated Filter, 4 in Width, 14 in Height, 30 in Depth, 10 MERV, 30%, 61%, 86% Filter Efficiency, 1458 cfm Air Flow Capacity, 13-3/4 in H x 3 in W x 29-3/4 in D Actual, -40 to 140 deg F, Additional Information: White Color, 0.12 in-WC at 2 cfm/sq-in Initial Pressure Drop