The Manhole Box is always used when wider manholes have to be installed within a working trench.
The trench shoring plate body is designed as a U-form and the wings have a thickness of 0,40 m. Thus, a 0,80 m wide manhole is formed.
Ahead and behind the manhole, normal trench shoring boxes ensure the trench safety. The spindles and accessories are identical to those of the trench shoring boxes.
| Max installation depth: | 4.00m |
| Trench width: | 2.00 – 5.28m |
| Strut clearance height: | 1.69m |
| Mobile and chain excavator: | 18 – 30ft |
