The Solar Star Roof Mount 2400 - 35 Watt Attic Fan generates maximum power to battle built-up heat and moisture in your attic. It's the ideal solar-powered ventilation solution for large attic spaces and extreme climates. Solar Star Attic Fans unite advanced solar technologies with progressive designs to deliver exceptional power and performance. The result is a ventilation system that efficiently vents heat and moisture from your attic that, when trapped, can damage your home and drive up energy costs. Your attic stays cool and dry, giving you greater comfort and prolonging the life of your roof, all while saving energy and lowering your utility bills.