1Unique Design: The marine wire cable vent cover features a clamshell design that is perfect for sealing and protecting openings of wires, hoses, and more. 2Weather Resistant: Made from plastic materials, the clam shell vent is built to be durable and weatherproof. It can withstand the harsh marine environment, providing reliable protection for your equipment. 3Accommodates Mounting Hardware: The vent cover is designed with internal space to accommodate three mounting hardware (included), making it easy to secure and install in the desired location. 4Wide Applications: The clamshell vent cover is recommended for use in sailboats, rowboats, and other applications, and to ensure the normal operation of the equipment. 5Versatile Use: The plastic flip cover vent cover has multiple uses and can be applied in different fields, such as electronic circuit covers and water tank ventilation hose covers, providing ventilation and protection.