The Vico Marine Boat Vent II, the Vico Marine Boat Vent 3 and the Taylor Made Products Boat-Vent II are top-rated boat vents. Each of these boat vents have more than a four-star rating on Amazon.com.
The Vico Marine Boat Vent II has a five-star rating. It is made from UV inhibited polycarbonate and prevents mold and mildew buildup.
The Vico Marine Boat Vent 3 has a 4.6 star rating. It is an improvement to the Boat Vent II, with 40 percent more venting, an overhanging top that allows less moisture, 30 teeth on the washer for a better grip and an ergonomic reversible nut for easy installation.
The Taylor Made Products Boat-Vent II has a 4.6-star rating. It prevents mold and mildew, is made from polycarbonate blend with UV inhibitors, and no screws or fasteners are needed.