Centek GPT Waterlocks Vertical are the perfect solution for your marine exhaust system needs. Made from high-quality fiberglass, these water locks are designed to withstand the harsh marine environment and provide reliable performance. The white coating finish not only looks great, but it also provides flame retardancy in accordance with ASTM D-635. These water locks are LLOYD certified, ensuring that you are getting a top-quality product that meets industry standards. The equal diameters on the incoming and outgoing sides make installation easy, and the drain plug ensures that maintenance is a breeze. Choose from a range of sizes to fit your specific exhaust hose diameter needs. Trust Centek GPT Waterlocks Vertical for a reliable and durable exhaust system solution. Shown price is for 41 mm, incl. VAT and delivery