In-Line Duct Blower Wheel Type Backward-Inclined Includes Drive Package Yes Assembly Unassembled Wheel Diameter 18 in Airflow @ 0.000 in SP 4 253 cfm Airflow @ 0.125 in SP 4 109 cfm Airflow @ 0.250 in SP 3 955 cfm Airflow @ 0.375 in SP 3 798 cfm Airflow @ 0.500 in SP 3 616 cfm Airflow @ 0.750 in SP 3 179 cfm Airflow @ 1.000 in SP 2 432 cfm Maximum Inlet Air Temperature 160 Degrees F Shaft Diameter 1 in Bearing Type Regreasable Pillow Block