Master Flow Green Machine ERVSOLAR EcoSmart Roof Vent, 500 cfm Air, Steel, 2:12
Increases attic ventilation – up to 500 cfm (14.16 cu-m/min) for excellent airflow. Roof Pitch ENERGY STAR – fully solar powered to eliminate electricity costs associated with electric vents. Requires no extra wiring or expensive electricians and is fully solar powered to eliminate related cooling costs.