It is a Supporting Extrusion in showcase system. One side of the extrusion can be tucked into the groove of upright extrusions and the plat of the supporting extrusion can be used to support panels. This support extrusion is simple to load and unload, without the use of any tools. It is flexible to assemble and is not time-consuming or labour-intensive. Its size is 12.5*28mm. The width of the plat of this supporting extrusion is longer than that of E223. It weighs 0.180kg per meter. Its max length is 6m. If you have any other requirements, LingTong will meet your needs. It is made of aluminium. The products of LingTong are green and environmentally friendly. If there are some relative needs, LingTong will provide the best service for you in exhibition construction.