Shutter Mount Exhaust Fan Assembled Assembled Blade Diameter 10 in Blade Material Aluminum Drive Type Direct Drive Duct Diameter Not Applicable Exhaust Airflow @ 0.000 in SP 625 cfm For Cut-Out Height 10 1/2 in For Cut-Out Width 10 1/2 in For Maximum Wall Thickness 6 in For Minimum Wall Thickness 3 in Frame Material Aluminum Guard Finish Powder Coated Guard Material Steel Guard Type Intake Housing Material Aluminum Steel Housing Finish Powder-Coated Includes Intake Guard