In-Line Duct Fan, For Fan Type Centrifugal Duct Fan, Airflow @ 0.000 in SP 4,274 cfm, Duct Diameter 16 in, Motor Output Power 1,357 W, Motor IP Rating IP54, Nameplate Voltage 120V AC, Phase 1, Number of Speeds 1, Overall Diameter 22 1/8 in, Overall Height 23 3/4 in, Overall Width 22 1/8 in, Application General Purpose, High-Efficiency Motor No, Housing Material Galvanized Steel, Motor Speed 1,600 RPM, Includes Mounting Brackets, Maximum Inlet Air Temperature 140 Degrees F