As the name called, ladder cable tray is a sort of cable tray that is constructed by jointing two longitude channels with horizontal supporting rungs. Ladder cable trays are usually made of stainless steel, aluminum, FRP with hot-dipped galvanized, pre-galvanized, polyester, epoxy, powder coated surface. These trays have large space and perfect ventilation property. Moreover, the ladder style cable trays are less prone to get fire, thus they are the best choice for paper mills, power plants, oil and gas industries and exterior environment.