Plated Standard Box truss 20.5"x20.5" is manufactured with schedule 40, 1.9” OD x 0.145" wall main chords and 1.05” OD x 0.125” wall diagonal bracing. All components are 6061-T6 aluminum tubing, and 5/8" grade 8 bolts are supplied for assembly of the truss elements. Applied 20.5" x 20.5" is suitable for the majority of lighting applications, flying P.A. and it can be used with GS Towers. This truss can also be supplied with casters.