Presentation image 3d cad truss render for Fashion Show Lighting Truss C21_124. 20×20 Trade Show Booths. Made with 12″ wide box Truss by edt exhibit and display truss and lds light design systems. modular aluminum truss system that breaks down into 2 smaller sizes depending on size requirements for trade show or convention center. 12″ wide aluminum box truss is one of our most durable lines of truss, great for lighting truss, stage lighting truss and stage lighting truss design. If you need a lot of load bearing support, visit our heavy duty 24″ wide aluminum truss page