Shutter Mount Exhaust Fan Assembled Assembled Blade Diameter 24 in Blade Material Steel Control Type Rotary Dial Drive Type Direct Drive Duct Diameter Not Applicable Exhaust Airflow @ 0.000 in SP 5 000 cfm For Cut-Out Height 26 in For Cut-Out Width 26 in For Maximum Wall Thickness 5 in For Minimum Wall Thickness 5 in Frame Material Aluminum Guard Finish Chrome Guard Material Steel Guard Type Intake Housing Material Aluminum Housing Finish Aluminum Includes Shutter