Tubeaxial Fan Drive Type Belt Drive Includes Drive Package Yes Includes Motor Yes Blade Diameter 48 in Nameplate Voltage 208-230/460V AC Phase 3 Motor Horsepower 10 hp Airflow @ 0.000 in SP 38 100 cfm Maximum Noise Level @ 5 Feet 112 sones Assembly Unassembled For Air Type Corrosive Vapor Blade Material Stainless Steel Housing Material Stainless Steel Number of Blades 5 Number of Speeds 1 Motor Enclosure Totally Enclosed Fan Cooled Standards AMCA Bolt Circle Diameter 50 1/4 in