Tubeaxial Fan Drive Type Belt Drive Includes Drive Package Yes Includes Motor Yes Blade Diameter 30 in Nameplate Voltage 208-230V AC Phase 1 Motor Horsepower 1 1/2 hp Airflow @ 0.000 in SP 10 955 cfm Maximum Noise Level @ 5 Feet 31 sones Assembly Unassembled Blade Material Stainless Steel Housing Material Stainless Steel Number of Blades 6 Number of Speeds 1 Motor Enclosure Totally Enclosed Fan Cooled Standards AMCA Bolt Circle Diameter 32 1/4 in