In-Line Duct Blower Wheel Type Backward-Inclined Includes Drive Package Yes Assembly Unassembled Wheel Diameter 36 in Airflow @ 0.000 in SP 10 815 cfm Airflow @ 0.125 in SP 10 039 cfm Airflow @ 0.250 in SP 9 008 cfm Airflow @ 0.375 in SP 7 892 cfm Maximum Inlet Air Temperature 160 Degrees F Shaft Diameter 1 1/4 in Bearing Type Regreasable Pillow Block Sound Level 12.5 sones @ 0.250 in SP and 5 ft 12.6 sones @ 0.125 in SP and 5 ft 12.7 sones @ 0.000 in SP and 5 ft