Stainless Steel Round Locker Ventilator 2-1/2"Features:Polished Stainless SteelRound2-1/2" The Perko Stainless Steel Round Locker Ventilator is a ventilation component commonly used in boat lockers or other enclosed spaces to promote air circulation and prevent moisture buildup. The "2-1/2"" specification refers to the diameter of the ventilator. The Perko Stainless Steel Round Locker Ventilator is typically constructed from stainless steel, which provides durability and resistance to corrosion in marine environments. It is designed with small openings or louvers to allow air to pass through while keeping out debris or pests. This type of ventilator helps to maintain a fresh and dry environment inside lockers or compartments, preventing the growth of mold or mildew and reducing odors. It is often installed on boat cabins, storage compartments, or any enclosed space that requires proper ventilation.