These handmade metal mailboxes by Yard Couture are constructed from a solid Corten steel plate, formed into a modern shape with an industrial appeal. Corten, also called weathering steel, is a copper chromium alloy that resists atmospheric corrosion, which basically means is endures and avoids rusting through. Your mailbox will arrive as raw, un-rusted, silver toned steel and will develop a deep, rich rusted tone when exposed to the outdoor elements. These weather resistant mailboxes will not only stand strong in all types of outdoor environments but provide a functional piece of architectural art to your home.