Blower, Wheel Type Forward-Curved, Includes Drive Package Yes, Assembly Unassembled, Wheel Diameter 11 1/2 in, Airflow @ 0.125 in SP 1,725 cfm, Airflow @ 0.250 in SP 1,540 cfm, Airflow @ 0.375 in SP 975 cfm, Maximum Static Pressure 1/4 in wc,...