Suitable for outdoor use. It has 3 model; with a cork backing, with a magnetic backing, with a cork and perforated steel backing.Single key 4xA4, double key 6xA4, 9xA4 and 12xA4 sizes are available and can be used both in portrait & landscape positions. The cover can be opened to 90 degrees. Each unit includes mounting screw and plugs for easy wall mounting and a free set of pins&magnets. The profile width is 45 mm and the depth of the case 36 mm.