Route marine engine exhaust systems with Centek 90 degree elbow fittings. Centek Elbows use the same fiberglass and fire retardant resins used to produce Vernatube, their UL listed tubing line. The fittings are lightweight, strong, non-corroding, and durable. Elbows are easy to install and O.D.s are compatible with approved marine rubber exhaust hose. Various diameters are available to fit a variety of exhaust applications.