Blower Wheel Type Forward-Curved Drive Type Belt Drive Includes Drive Package No Assembly Unassembled Wheel Diameter 18 1/2 in Minimum Airflow 8 500 cfm Maximum Airflow 10 500 cfm Maximum Static Pressure 4 in wc Maximum Inlet Air Temperature 250 Degrees F Shaft Diameter 1 in Bearing Type Ball Wheel Material Steel Housing Material Steel Wheel Width 18 1/2 in Number of Inlets 2 Inlet Diameter 15 1/8 in Outlet Shape Rectangular Outlet Height 18 7/8 in Outlet Width 21 7/8 in