parts list and exploded view architectural information for Modular Aluminum Truss System C30_124. 20×30 Trade Show Booth Size. Aluminum Box Truss by edt exhibit and display truss and lds light design systems. large aluminum truss system that breaks down into other trade show standard sizes. dont buy used aluminum truss for sale or truss display rentals, but browse our large library of aluminum truss for sale that can constantly be reconfigured and reworked for many years to come