The roof mount Master Flow EZ Cool Plug in. Power Attic Vent from GAF is an excellent choice for exhausting excess heat and moisture from your attic without the need for expensive, hard-to-schedule electricians. The convenient "Plug- and -Play" design allows it to be plugged into an existing 110-Volt grounded electrical outlet in your attic, eliminating the hardwired electrical hook-up required by typical power attic vents. When installed as part of a properly balanced attic ventilation system consisting of both intake and exhaust, this efficient power attic vent delivers up to 1,050 cubic ft./minute of airflow and ventilates up to 2,000 sq. ft. of attic space. Color: Black. Material: Galvanized Steel.