Made of 1.2mm thick cold rolled steel with anti-rust black paint finish and powder coating 1U fixed trays width is 19" standard Various models available, depending on the required depth: 450 mm, 600 mm, 800 mm and 1000 mm The flat surface has circular perforations that favor the ventilation of the electronic equipment that is installed Its sides have profiles with perforation, which makes them suitable for crazing cabinets of the same size