Tubeaxial Fan Blade Diameter 34 in Maximum Motor Horsepower 5 hp Minimum Motor Horsepower 2 hp Maximum Motor Speed 1 251 RPM Minimum Motor Speed 936 RPM Maximum Airflow 19 290 cfm Minimum Airflow 14 430 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 36 1/4 in Includes Drive Package No Includes Motor No Bearing Type Ball Bearing