The 12 in. Maxx Air Solar Roof Mount Ventilator is built for ventilating residential attic spaces up to 1,000 sq. ft. This solar attic fan features a galvanized steel dome, brushless DC motor for long life and ultra-quiet operation, and integrated solar panel to create a unit that is durable and more low profile than other solar fans for a cleaner roofline appearance while still achieving ideal sun exposure. Install involves no wiring into any AC power source and mounts to your roof using standard tools. A well-ventilated attic offers year-round benefits, making your home easier to cool and helping to prolong the life of roofing components during the summer while preventing mold and mildew in the winter. Our solar exhaust fan is an eco-friendly ventilation option and costs nothing to operate, saving you money!