4 inch Boat Floor Drain and Vent Cover for Marine Applications

A 4-inch floor drain and vent cover for boats, designed for efficient drainage and ventilation, compatible with fiberglass or carpeted surfaces, made from durable polypropylene.

• The description claims this cover reduces moisture buildup and improves airflow.
• The description claims it is made from high-quality polypropylene built to withstand harsh marine environments.