It is a Side Seal in showcase system. Side Seal is used to enclose the edges of the panels. Panels with edges which is equipped with side seal can ensure that their edges are not damaged .Whether the panel is to be fitted with side seal or not is based on customer requirements for assembly. Its size is 11.4*11.4mm. It weighs 0.200kg 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.