ESC has fully developed its Trench Shield Series (also known as Trench Boxes) a two-sided, high-quality, and economical excavation support system that provides a safe working environment in trenches up to 40 feet deep. ESC’s trench shields are a heavy duty and robust product designed and manufactured in compliance with both national and International Standards. All shields are certified by third party professional engineers, following the guidelines and recommendations of NAXSA (North American Excavation Shoring Association) and complies with all OSHA STANDARDS.