The PRO-Lite Series 3650 lightweight aluminum trench shield from Prospan Manufacturing Company is 100 percent OSHA compliant and stands 3 feet tall and 5 feet long, weighing 125 pounds. They are stackable to a depth of 12 feet in C-60 soil. Stacking tubes, adjustable leg kits, lifting slings and a selection of spreader bars are available. They can be easily transported in the back of a pickup, eliminating the need for a shoring trailer. 888/413-8100; www.prospanshoring.com.