Vista Professional Outdoor Lighting UW-5217-B-4.5-W-60 5" Black Underwater Light 4.5W this ruggedly designed low voltage underwater fixture with directional grate is constructed of injection-molded, fiber-reinforced composite for strength and high UV stability and is warranted for ten years against corrosion. A silicone o-ring gasket is fitted to the housing to ensure a water-tight seal. A clear, convex, tempered, shock and heat resistant, soda-lime glass lens safeguards the lamp and optics.