The HQST Solar Attic Fan is an all-in-one unit that is designed to lower your attic temperatures and stop damage from moisture. The built-in, adjustable 30watt panel maintains a strong air flow that makes this a great product for proper attic ventilation. You can adjust the panel up to a 45 degree angle or detached it and mount remotely for maximum exposure to the sun. Durable rust-free aluminum ensures long life & no maintenance. Optional snap-on thermostat for use in colder climates.