Show Solutions 4' long, 20.5" x 20.5" box truss with grade 8 bolts

A 4-foot length of 20.5" x 20.5" Pro Series (ST-2020) straight box truss, supplied with Grade-8 bolts. The larger 20.5-inch section is what you move to when spans get long or loads get heavy - main chords are 2" outer diameter x 1/8" 6061-T6 aluminum with 1" outer diameter x 1/8" diagonals, on end plates cut to the industry-standard plated truss bolt pattern. At 4 feet it is a short make-up length for closing out a run or building a stub between corner blocks, in natural aluminum finish.