Blower Wheel Type Forward-Curved Drive Type Belt Drive Includes Drive Package Yes Assembly Unassembled Wheel Diameter 15 in Airflow @ 0.000 in SP Not Applicable Airflow @ 0.100 in SP Not Applicable Airflow @ 0.125 in SP Not Applicable Airflow @ 0.250 in SP Not Applicable Airflow @ 0.375 in SP 3 015 cfm Airflow @ 0.500 in SP 2 830 cfm Airflow @ 0.750 in SP 2 370 cfm Airflow @ 1.000 in SP Not Applicable Airflow @ 1.250 in SP Not Applicable Airflow @ 1.500 in SP Not Applicable