In-Line Duct Blower Wheel Type Backward-Inclined Drive Type Belt Drive Includes Drive Package No Assembly Unassembled Wheel Diameter 30 in Minimum Airflow 8 353 cfm Maximum Airflow 15 720 cfm Maximum Static Pressure 1 3/4 in wc Maximum Inlet Air Temperature 160 Degrees F Shaft Diameter 1 1/4 in Bearing Type Regreaseable Pillow Block Wheel Material Aluminum Housing Material Steel Inlet Diameter 20 1/2 in Outlet Diameter 20 1/2 in Outlet Duct Connection Height 41 3/4 in