Blower Wheel Type Forward-Curved Drive Type Belt Drive Includes Drive Package No Assembly Unassembled Wheel Diameter 9 in Minimum Airflow 651 cfm Maximum Airflow 1 559 cfm Maximum Static Pressure 2 1/2 in wc Maximum Inlet Air Temperature 250 Degrees F Shaft Diameter 3/4 in Bearing Type Pillow Block Ball Wheel Material Steel Housing Material Steel Wheel Width 4 1/2 in Number of Inlets 1 Inlet Diameter 9 in Outlet Shape Rectangular Outlet Height 10 3/4 in Outlet Width 6 1/2 in