QuietCool Solar Attic Fans are the best in the industry offering the largest panels at an affordable price. This fan features a 40-Watt solar panel， a preset thermostat， an ultra-energy efficient DC motor， a heavy-duty steel housing， and an included AC/DC inverter. Solar attic fans work by using sunlight to power the fans motor to help prevent any heat or moisture build up in your attic. Your attic can reach temperatures of up to 150°F which can destroy the integrity of your home as well as completely destroy your roof because of the humidity and moisture build up. Because of this， solar attic fans can prolong the life of your roof structure and air conditioning while helping you save up to 30% on A/C costs. With a QuietCool Solar Attic Fan， you also get the benefit of an included AC/DC inverter. This allows the fan to run 24/7. When there is sunlight outside， the fan will run only on solar power being powered by the large solar panel on the fan. When there is no sunlight， such as at night， the fan will switch to AC power and continue to run throughout the night. This allows you to take advantage of cooling your attic during the coolest part of the day. Simply mount the fan to your gable vent using the adjustable mounting tabs， mount the solar panel on the side of your home or on the roof， and plug in the inverter to enjoy 24/7 cooling and ventilation in your attic.

40-Watt solar panel

Ultra-energy efficient DC motor

Preset thermostat

Included AC/DC inverter for 24/7 runtime

Heavy-duty steel housing

Integrated hand guard

Adjustable mounting tabs

Fully adjustable solar panel - 60° tilt