For the Kichler Chesapeake 1 Light Outdoor Wall Lantern 49255BK: The Chesapeake Collection embodies America's coastal communities. Featuring a lantern-like shape in a Black finish, it is formed from die-cast aluminum by the finest craftsmen in the industry. Cast aluminum lanterns use a durable powder coating which is very resistant to ultraviolet light and other harmful elements. Although cast aluminum fixtures will not tarnish, it is still recommended that that you take a soft, dry or damp cloth and wipe down the lantern weekly to remove any dust or debris. Do not use any abrasives such as car wax, brass cleaner, polishes or other chemicals as this may damage the finish. The durability of any finish on outdoor items varies widely depending on the location and how much direct and indirect weathering the piece is subject to.