AAF® Air Filter, VariCel® 2+ SC Series, Box Filter, Polypropylene Fiber Media, Polystyrene Frame, 12 in Width, 24 in Height, 4 in Depth, 15 MERV, 22 sq-ft Media Area, 500 fpm Velocity, 0.58 in-WG, 0.65 in-WG Initial Resistance, 1.5 in-WG Final Resistance, 1000 cfm Air Flow Capacity, 11-3/8 in H x 23-3/8 in W x 3-3/4 in D Actual, 150 deg F, Additional Information: Black Frame