It is a runner extrusion in showcase system. When there is needed to install sliding doors, E472 can be used to help slide smoothly. E472 is inserted into the groove of bottom track extrusion and equipped with top track extrusion to make the door slide. Two runner extrusion for two panels whose thickness is between 5 to 7mm. Its size is 24*9.5mm. Its max length is 6m. It weighs 0.197kg per meter. 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.