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
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