Rotterdam is made from solid brass It will not rust even when the salinity levels are high. It is a compact round bulkhead lamp/light with brass mesh cover and with prismatic glass light diffuser. The lamp holder is porcelain. This light fitting is manufactured entirely in Greece. The high gauge makes the fitting a bit heavy but robust and unbreakable. The finish or coating of the lamp has been applied using electroplating thus it will never peel off or crack. It can be Installed on the wall or the ceiling or on a post or on a boat indoors or outdoors. Guaranteed 100 Years rust free. 200% After sales support. Free spare parts for life.