Attic Exhaust Fan Control Type Humidistat Thermostat Blade Material Steel Exhaust Airflow @ 0.000 in SP 1 380 cfm Fire Safety Shut-Off No High-Efficiency Motor No Housing Material Plastic Includes Humidistat Yes Includes Shutter No Includes Thermostat Yes Maximum Attic Area 1 900 sq ft Motor Horsepower 1/10 hp Mounting Location Gable Nameplate Voltage 120V AC Overall Diameter 17 in Overall Height 6 7/8 in Overall Length 21 in Overall Width 21 in Dome Shape Not Applicable