The smallest and most economical solar vent in the Nicro line. It is an exhaust vent only, but it will keep the boat cabin cool when you need it most - during the hot sunlight hours. Under solar power, the Mini Vent 1000 will move 700 cu. ft. of air an hour. At night, even a light breeze will continue to ventilate the boat passively. Built-in shut-off damper prevents water intrusion in rough seas. Includes a white plastic interior trim ring and fits a 3-3/4" installation hole. Includes a 2-year limited, 5-year qualified warranty and mounting hardware. Finish SS cover Size 7" D x 1-3/4" H