20 Inch Gable Mount Fan Attic Ventilator with Adjustable Temperature Thermostat, 3127 CFM, Black

[Effective Ventilation] Powerful blower with a fan speed of 1080 RPM for an air flow of 3127 CFM. Moves air through your target location efficiently for optimal ventilation. [Durable Material] Durable galvanized steel shroud and blades to resist heat distortion. With strong wind power, it is also very energy efficient [Thermostat Included] This thermostat controls ventilators to promote the equalization of temperatures inside and outside your attic. [Wide Applications] Use anywhere that would benefit from improved air flow to reduce humidity, clear the air and lower temperatures in grow rooms, greenhouses, Attics. Suitable for 1850 sq.ft attic. [Easy To Install] Designed for gable installation. Mounting brackets simplify installation.