The UltraShore shoring system is made of specially corrugated aluminum, with lightweight trench shields. All panels can be used horizontally or vertically and are stackable. Users can easily close off one or both ends with quick-release, spring-loaded end closure panels. One person can lower a single pair of assembled panels into an excavation. The unit conveniently transports in a pickup and is safe for burying at depths to 12 feet, even in class C soils. Optional features like leg kits or wheel kits are available to take full advantage of OSHA regulations. 800/746-7464; www.shoring.com.