Lightweight Ultra Shore Trench Boxes are constructed from corrugated lightweight aluminum that is easy to transport, set up and use, making them a time- and money-saving option for plumbers, municipalities and utility contractors. All panels can be used horizontally or vertically and are stackable up to 12 feet in Class C soils. The boxes can easily be transformed into a three- or four-sided application with the use of quick-release end closure panels. Other accessories include 2-foot leg kits and wheel kits to help take full advantage of OSHA regulations. 800-746-7464; www.shoring.com.