One of 80mm square extrusions, its overall dimension is 80mm x 80mm, closed on three sides and open on one side. When used with M342, they can form a 100mm square column closed on four sides. It also can be used together with acrylic panel and lights to build luminous booths, if insert acrylic panel, suggested 74mm width panel. The material of M341 is 6063 aluminum. The wall thickness of profile is 2.1mm, it has three system grooves, the width of each groove is 4.3mm. And the weight per meter is 2.079kg, the maximum length that can be produced is 6 meters. The product can be processed according to customer requirements, and can be reused for many times. A variety of surface treatment methods are available.