Description Attwood Round Deck Filler 38mm Diesel  Stainless Steel Lid Angled 1 1/2″ Attwood’s new plastic vented deck fills incorporate an industry-first patent-pending waterproof screen that eliminates the possibility of water entering a boat’s fuel system, while also allowing your boat’s engine to breathe freely. Exceeds ISO 21487 standard for minimum required venting area. Meets all ABYC and US Coast Guard safety standards for marine fuel systems. Unique design includes an integral tank vent with flame arrestor and anti-surge technology. CE certified to ISO 21487 enabling sales worldwide. Features Integrated patent-pending waterproof screen eliminates the possibility of water entering your boat’s fuel system. Unique design includes an integral tank vent with flame arrestor and anti-surge technology, preventing fuel from escaping into the environment. Engineered body designed for extreme strength. Stainless Steel beaded chain to prevent loss of round Gasoline, Diesel, and Water caps. Deck plate key is included. Specifications Fits standard 38mm or 1½” fuel fill hose and 16mm 5/8″ vent hose. 83mm diameter lid. Product code: 192307