Supply Fan w/Drive Package, Assembled Unassembled, Blade Diameter 36 in, Blade Material Steel, Drive Type Belt Drive, Exhaust Airflow @ 0.000 in SP 12, 220 cfm, For Cut-Out Height 38 1/2 in, For Cut-Out Width 38 1/2 in, Frame Finish Zinc Plated, Frame Material Steel, Guard Type None, Includes Drive Package, Includes Dehumidistat No, Maximum Airflow 12, 220 cfm, Maximum Noise Level 15.8 sones