Solar Power Roof Mounted Attic Fan SolarCool does not require any wiring or electrical hook-up. Initial installation costs are the homeowner's final costs! It's fast, efficient and affordable. The solar panel is on a bracket, allowing it to be tilted or rotated to the south or west for maximum sun exposure and optimal energy collection. And, because it's a single unit, it's easier to install. No electrical hook-up needed •   Solar panel mounts directly to dome •   Up to 800 CFM for attics up to 1,200 square feet •   Low-profile, rust resistant, galvanized steel dome •   Five-year limited warranty and two-year Replacement Plus™ protection Benefits of a SolarCool Attic Vent: It operates during the day when your attic requires more air movement.Unlike most electric power vents that are regulated by a thermostat, the SolarCool Attic Vent works continuously from sunrise to sunset, keeping the attic ventilated all day long instead of waiting for the attic to get overheated.