Plastic Deck 38mm Fuel Deck Filler Flip Top | 4Boats38 mm plastic fuel deck filler with flip top cap for secure access to marine fuel tanks; durable, corrosion resistant construction for small craft. Flip top cap reduces spills and keeps debris out 38 mm collar fits 38 mm (1. 5") deck openings Durable plastic body resists corrosion in a marine environment Fuel compatible seal helps prevent leaks Threaded mounting secures unit to deck or tank Designed for standard 38 mm (1. 5") deck cut outs; suitable