Blower Wheel Type Forward-Curved Drive Type Belt Drive Includes Drive Package No Assembly Unassembled Wheel Diameter 11 1/2 in Minimum Airflow 4 500 cfm Maximum Airflow 5 500 cfm Maximum Static Pressure 2 1/2 in wc Maximum Inlet Air Temperature 250 Degrees F Shaft Diameter 3/4 in Bearing Type Ball Wheel Material Steel Housing Material Steel Wheel Width 10 3/4 in Number of Inlets 2 Inlet Diameter 9 3/8 in Outlet Shape Rectangular Outlet Height 11 3/8 in Outlet Width 13 1/8 in