These pieces are made using marine grade aluminum so there are no worries about rust. We also use a high temperature paint and coat them with a UV protective coating that looks and feels like glass, also protecting the finish from the outdoor elements. They are light weight for their size. These beautiful underwater scenes are great for the kitchen, bathroom, living room, bedroom, dining room, office, bar area, mancave, on a patio, your garden, a tiki hut, or anywhere to be honest. The aluminum is cut using a CNC plasma machine out of our 5’ x 10’ sheets of material, which allows us to create your custom artwork up to that size.