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27 In.H-W 6.5 In.L Fiberglass Backdraft Damper, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Fiberglass, Number of Panels 1, Maximum Air Velocity 2500 fpm, Overall Height 27 in, Rough Opening Diameter 24 1/2 in, Rough Opening Shape Square, Fits Fan Diameter 24 in, For Duct Shape Not Applicable, Free Area 3.3 sq ft, Overall Width 27 in, Frame Material Thickness 0.1 in, Overall Length 6 1/2 in, Connection Type Not Applicable, Frame Depth 3 in
39 In.H-W 6.5 In.L Fiberglass Backdraft Damper, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Fiberglass, Number of Panels 1, Maximum Air Velocity 2500 fpm, Overall Height 39 in, Rough Opening Diameter 36 1/2 in, Rough Opening Shape Square, Fits Fan Diameter 36 in, For Duct Shape Not Applicable, Free Area 7.4 sq ft, Overall Width 39 in, Frame Material Thickness 0.1 in, Overall Length 6 1/2 in, Connection Type Not Applicable, Frame Depth 3 in
Blower, Wheel Type Forward-Curved, Drive Type Belt Drive, Includes Drive Package Yes, Assembly Unassembled, Wheel Diameter 12 1/2 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 Not Applicable, Airflow @ 0.400 in SP Not Applicable, Airflow @ 0.500 in SP 2,100 cfm, Airflow @ 0.750 in SP 1,980 cfm, Airflow @ 1.000 in SP 1,460 cfm, Airflow @ 1.250 in SP Not Applicable