Solar Attic Fan - 60 Watts - 3100 sq ft - Comes with Remote Solar Panel - Black Most Powerful Solar Attic Fan Available - 60-Watt with up to 1995 CFM and rated for up to 3255 Sq. Ft. 25-year Manufacturer Warranty on Motor, Housing, and Solar Panel. Commercial Quality Components Throughout. Easily installs in as little as 2-hours. Top Choice of Contractors.