Exhaust Fan with Drive Package Assembled Unassembled Blade Diameter 24 in Blade Material Steel Drive Type Belt Drive Exhaust Airflow @ 0.000 in SP 7 927 cfm For Cut-Out Height 26 1/2 in For Cut-Out Width 26 1/2 in Frame Finish Zinc Plated Frame Material Steel Guard Type None Includes Drive Package Includes Dehumidistat No Maximum Airflow 7 927 cfm Maximum Noise Level 19.8 sones