Shutter Mount Exhaust Fan, Assembled Assembled, Blade Diameter 18 in, Blade Material Steel, Control Type Rotary Dial, Drive Type Direct Drive, Duct Diameter Not Applicable, Exhaust Airflow @ 0.000 in SP 3, 150 cfm, For Cut-Out Height 20 in, For Cut-Out Width 20 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. This item has been restricted from sale in the following state (s): []