40mm upright extrusion with big hollow with 8 system grooves, can be used as beam with two locks, aluminum alloy material 6063, classic exhibition construction, main components for standard booth\ shell scheme \display booth \exhibition booth\pavilion group booth\trade show\back to back booth\fascial board\expo and liner booth, widely used in exhibition industry. Strong compressive ability, strong enough thickness and hardness, not easy to deform. Good surface treatment effect, such as anodize\power coated \silver and so on, corrosion resistance and wear resistance, not easy to scratch, and the material can be recycled. Only a wrench can be used to complete the construction of a booth, 4.3mm groove can compatible with tension lock Z981-8\Z991-8 and other display accessories. LT-S108