Tubeaxial Fan Blade Diameter 60 in Maximum Motor Horsepower 10 hp Minimum Motor Horsepower 5 hp Maximum Motor Speed 622 RPM Minimum Motor Speed 493 RPM Maximum Airflow 50 567 cfm Minimum Airflow 40 079 cfm Maximum Static Pressure 1 in wc For Air Type Clean Air Assembly Unassembled Blade Material Aluminum Housing Material Steel Number of Blades 6 Standards AMCA Sound and Air Bolt Circle Diameter 63 in Includes Drive Package No Includes Motor No Bearing Type Ball Bearing