- For shelf 14 - 18 mm thick (panel or wood). The shelf has to be pushed downwards onto the side dowels, which can be placed or screwed into any position required. The side dowels slot into the socket of the shelf supports and a click locks the shelf in position. To provide a structural fastening to the furniture screwed side dowels are required, so that the shelf flushes with the sides. 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.