The Grainger 16X650 is a 16-inch diameter, 650 CFM, direct drive, aluminum exhaust fan. It features a 1/3 HP, 115V motor with permanently lubricated ball bearings and automatic thermal overload protection. The fan has a galvanized steel housing with baked gray enamel finish and comes with wall mounting brackets. It is suitable for commercial and industrial exhaust ventilation applications. The maximum operating temperature is 104°F and it weighs approximately 31 lbs.