The Coastal Collection is designed specifically to withstand extreme weather and saline conditions. The Polymer body and polycarbonate diffusers are U.V. and impact resistant, and corrosion proof. The products are manufactured Clic-Clac technology to allow easy assembly and installation. The twist and lock system allows multiple options on how the fitting is assembled e.g. the lantern bracket can be placed below or above the lamp housing to best suit your situation.