The Manhole Box is designed for use in conjunction with the Standard JC40 Box and allows quick manhole construction using trenchbox installation techniques.

• Maximum depth of excavation with two extension boxes fitted to the base box is 5.4m
• Five Manhole Box lengths are available: 2.5m, 3.0m, 3.5m, 4.0m and 4.5m
• All types have 2.5m high base panels and 1.5m high extension panels
• The range of Manhole Box widths allows installation of manhole rings up to 3.0m in diameter
• 2.5m, 3.0m and 3.5m boxes use screw adjustable JC40 struts
• 4.0m and 4.5m boxes use pin adjustable struts