Modular aluminium boxes are engineered for high strength, ultra-low weight, and ease of handling. The system is ideal for utility maintenance and repairs to cable splice pits, plumbing repairs, gas, sewer, water and other light utility installations. Modular panels, end- members, and adjustable spreaders are light enough for transport by a utility vehicle, and can be quickly configured for 2, 3 or 4-sided applications.

A two-man crew can readily assemble the system by hand for rapid placement in the trench by a rubber-tyred backhoe. The foam-filled, double-wall aluminium panels are available in a full range of standard sizes. Extruded end-members, available in various lengths, allow easy pin-and-keeper connection of panels and spreaders in various sizes, forming the exact configuration required at the work site.

Various width options are available with the adjustable screw jacks.