Fixed Built-In 35-Watt Solar Module for Ultra-Low Profile. Black housing with Black background for lower visual impact. Designed for use on pitched Fiberglass-Asphalt shingle roofs. Industry leading Manufacturer's Lifetime Warranty on solar module, motor and housing. For Attic Spaces up to 2550 sq. ft. Exhaust up to 1597 CFM during sun hours. Motor isolation bracket ensures quiet motor operation. (optional thermostat sold separately). Ultra-low profile Natural Light 35-watt solar attic fan meets the demands of customers wanting a lower visual impact of attic ventilators. Extends the life of roof shingles and underlayment. Helps reduce HVAC loads and A/C run times during summer. Helps prevent winter hotspots and ice damming during winter. Reduces damage caused by the build-up of attic moisture year-round. Commercial-grade aluminum components powder-coated inside, Protective Stainless Steel Screen. For Attic Spaces up to 2550 sq. ft. Exhaust up to 1597 CFM during sun hours. Motor isolation bracket ensures quiet motor operation. Made in USA.