- For shelf 16 - 18 mm thick. It allows to join together any side and shelf, including bottom and top, without using any further connecting fitting. The panel has to be pushed downwards onto the side brackets, which can be screwed into any position required. The side bracket slots into the socket of the shelf supports and a click locks the panel in position. Made of zinc alloy and special plastic. In ccordance with the European regulations UNI EN 14749/05. Recommended load capacity (Width x Length, mm - Max. shelves Weight) 300x600 - 32; 300x800 - 28; 450x600 - 30; 450x800 - 25.