ZB1701-5 Speficication of air vent cover The surface is polished . Good material and excellent polishing quality make it has good performance on anti-rust and corrosion resistance . This air vent cover is produced in stainless steel material , which is solid and durable 2 sizes are available for you ï¼? 4 inch and 5 inch. Stainless steel 316 5' inch marine round louvered vent for boat yacht * 5" Round Louvered Air Vent * Easy to use and install. * 316 stainless steel, corrosion resistance and durable. * Great for related vents in boats, marine, yacht, caravan, home
