36 Watt Curb Mount Solar Attic Fan by Natural Light Constructed of .080 14-gauge aluminum, flashing and shroud are seamless for weather tight install. Powder coated to withstand any environment. Highest quality in the industry. 25-Year Manufacturer's Warranty on motor, housing and solar panel. 36-Watt with Capacity up to 1628 CFM and up to 2625 Sq. Ft.