Tubeaxial Fan Drive Type Belt Drive Includes Drive Package Yes Includes Motor Yes Blade Diameter 54 in Nameplate Voltage 208-230/460V AC Phase 3 Motor Horsepower 5 hp Airflow @ 0.000 in SP 34 793 cfm Maximum Noise Level @ 5 Feet 32 sones Assembly Unassembled For Air Type Clean Air Blade Material Steel Housing Material Steel Number of Blades 6 Number of Speeds 1 Motor Enclosure Totally Enclosed Fan Cooled Standards AMCA Bolt Circle Diameter 56 1/4 in