(1)Durability and corrosion resistance: Marine vents are made of nylon plastic Marine grade material and are highly resistant to seawater and corrosion caused by the Marine environment (2)Marine air vent covers: caravan air vent cover is suitable for the use of ventilation, easy to install and use, and brings great convenience. (3)Marine clamshell cover: widely used in marine boat ventilation and heat dissipation, and not easy to be blocked. (4)Vent cover: durable, and strong ability to withstand break, not only oxidation resistance, but also more beautiful installation effect. (5)Application: Suitable for ships, oceans, yachts, RVs, homes and other related ventilation hole