Blower Wheel Type Backward-Inclined Drive Type Belt Drive Includes Drive Package No Assembly Unassembled Wheel Diameter 18 1/4 in Minimum Airflow 2 809 cfm Maximum Airflow 7 565 cfm Maximum Static Pressure 4 1/2 in wc Maximum Inlet Air Temperature 250 Degrees F Shaft Diameter 1 1/8 in Bearing Type Pillow Block Ball Wheel Material Steel Housing Material Steel Wheel Width 8 7/8 in Number of Inlets 1 Inlet Diameter 19 5/8 in Outlet Shape Rectangular Outlet Height 19 5/8 in