I-MAG can provide chain motors and turn-key structures to support virtually any LED wall application. In addition, I-MAG can provide specially engineered feet or truss beams to support freestanding indoor or outdoor LED walls. Free Standing Truss System:?This system consists of three box truss as masts and three chain motors lift a triangle truss to the desired show height. With a working load capacity of 12,000lbs and a height of 40ft. Self-Climbing Truss System-This system consists of two truss as masts and work with chain motors, on each mast, that lift the horizontal truss from the ground to its intended show height. With a working load capacity of 8,000lbs and a height of 40ft.