90Adeg P-Trap Fuel Tank Vent - Black with Black Vent HeadThis Attwood 90-Degree P-Trap Fuel Tank Vent reliably helps prevent water from entering the fuel tank while still allowing air to vent freely during normal sea conditions and washdowns. This vent&';s effectiveness eliminates the need for an anti-siphon loop in the vent hose. It requires a 3/4-inch installation hole and can be used with a maximum hull thickness of 9/16 inches. Features: Standard Mount - (inch) 5/8" I.D Hose Reliably helps prevent water from entering the fuel tank Still allows air to vent freely during normal sea conditions and washdowns This black vent with a black vent head meets ABYC standards *Compatible with Ethanol blended fuels. Quick Guide (pdf)