SQ-4121 90º 2-wayThe SQ 4121 is a 90 2 way box truss corner made from the same high strength 6082 T6 aluminum as the rest of our 12'' truss. 6082 aluminum alloy is gaining in popularity over the 6061 alloy that is often used in truss fabrication because it has a higher tensile (10% 18% stronger) and higher corrosion resistance due to a lower copper content. What does this mean for you? A superior product in both strength and finish while retaining the low cost and