This Sea-Dog louvered vent is designed to promote air circulation and prevent mold, mildew, and unpleasant odors. Use on cabin doors, lockers, dock boxes, and more. Corrosion-resistant stamped 304 stainless steel construction ensures years of dependable use. Easily installed with #6 RH fasteners (not included). 9-1/8"L x 4-5/8"W.