Attributes . Ventilation Fan, 3 in Duct Size, 50 CFM Air Flow, 120 V, 0.9 A, 50 CFM, 4 Sones Sound Level, 7-1/4 in Length, 7-1/2 in Width, 3-5/8 in Height, Steel Grill Material, Steel Housing Material, 45 sq.ft Ventilation Area, 3.5 lb . Names