CLEAN COMFORT® Media Air Cleaner, Series: AM11 Series, 21.7 in Width, 17.6 in Height, 6.15 in Depth, 1200 cfm Air Flow Capacity, 0.3 um Filter Efficiency, 4000 sq-ft Media Area, 11 MERV, 17.6 in L x 21.7 in W x 6.15 in D Cabinet Dimensions, 16 x 20 in Duct, 16 in L x 20 in W x 4.5 in D Media, Surface Mounting, 0.07 in-WG at 246 fpm/0.21 in-WG at 492 fpm Pressure Drop, Galvanized Steel, Painted