The 14 in. Maxx Air Solar Roof Mount Ventilator is built for ventilating residential attic spaces up to 1,300 sq. ft. This solar attic fan features a galvanized steel dome, brushless DC motor for long life and ultra-quiet operation and an adjustable standalone solar panel to create a unit that is durable and achieves a the most efficient operation by placing your panel exactly where you get the most Sun exposure, even if it's a distance away from the power attic fan. 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.