In-Line Duct Blower Wheel Type Backward-Inclined Drive Type Belt Drive Includes Drive Package Yes Assembly Unassembled Wheel Diameter 36 in Airflow @ 0.000 in SP 18 494 cfm Airflow @ 0.125 in SP 18 041 cfm Airflow @ 0.250 in SP 17 587 cfm Airflow @ 0.375 in SP 17 134 cfm Airflow @ 0.500 in SP 16 511 cfm Airflow @ 0.750 in SP 15 327 cfm Airflow @ 1.000 in SP 14 081 cfm Airflow @ 1.250 in SP 12 560 cfm Maximum Static Pressure 1 1/4 in wc Maximum Inlet Air Temperature 160 Degrees F