Tubeaxial Fan Drive Type Belt Drive Includes Drive Package Yes Includes Motor Yes Blade Diameter 60 in Nameplate Voltage 230/460V AC Phase 3 Motor Horsepower 7 1/2 hp Airflow @ 0.000 in SP 45 933 cfm Maximum Noise Level @ 5 Feet 48 sones Assembly Unassembled For Air Type Flammable Vapor Blade Material Aluminum Housing Material Steel Number of Blades 6 Number of Speeds 1 Motor Enclosure Totally Enclosed Nonventilated Standards AMCA Bolt Circle Diameter 63 in