In-Line Duct Blower Wheel Type Backward-Inclined Drive Type Belt Drive Includes Drive Package No Assembly Unassembled Wheel Diameter 18 in Minimum Airflow 1 630 cfm Maximum Airflow 5 313 cfm Maximum Static Pressure 3 in wc Maximum Inlet Air Temperature 160 Degrees F Shaft Diameter 1 in Bearing Type Regreaseable Pillow Block Wheel Material Aluminum Housing Material Steel Inlet Diameter 13 1/4 in Outlet Diameter 13 1/4 in Outlet Duct Connection Height 23 3/4 in