Attic Exhaust Fan Control Type Humidistat Thermostat Blade Material Steel Exhaust Airflow @ 0.000 in SP 1 500 cfm Base Material Steel Fire Safety Shut-Off No High-Efficiency Motor No Housing Material Steel Includes Humidistat Yes Includes Shutter No Includes Thermostat Yes Maximum Attic Area 2 100 sq ft Motor Horsepower 1/6 hp Mounting Location Roof Nameplate Voltage 120V AC Overall Height 8 in Overall Length 24 in Overall Width 24 in Dome Shape Round