U.S. SUNLIGHT CORP. 1820 CFM 25-Watt Solar Powered Attic Fan

A smart alternative to conventional roof vents, the Solar Powered Attic Vent operates during the day and collects power from the sun to convert into electricity. In turn, this energy operates a high efficiency motor inside the power vent, so there's no added cost for electricity. That saves energy, which is better for the environment. Cools your home in the summer and removes harmful moisture in the winter.