Exhaust Fan Assembled Assembled Blade Diameter 10 in Blade Material Aluminum Drive Type Direct Drive Duct Diameter 10 1/4 in Exhaust Airflow @ 0.000 in SP 752 cfm Frame Finish Galvanized Frame Material Steel Guard Finish Zinc Plated Guard Material Steel Guard Type Intake Includes Dehumidistat No Maximum Noise Level 9.4 sones