Tubeaxial Fan Drive Type Direct Drive Includes Drive Package Yes Includes Motor Yes Blade Diameter 30 in Nameplate Voltage 200-230/460V AC Phase 3 Motor Horsepower 3 hp Airflow @ 0.000 in SP 14 792 cfm Maximum Noise Level @ 5 Feet 29 sones Assembly Assembled For Air Type Clean Air Blade Material Aluminum Housing Material Steel Number of Blades 6 Number of Speeds 1 Motor Enclosure Totally Enclosed Air Over Standards AMCA Sound and Air UL Listed Bolt Circle Diameter 32 3/8 in