Find a Location

Octagon Manhole Trench Shields


Octagon Manhole Trench Shields

GME’s Manhole Trench Shields are designed to allow a pipe job to progress along with little interruption or delay. The idea behind these trench boxes is to use them in conjunction with trench shields on a job-site. When the job lead to a manhole structure, insert the Manhole Trench Box and continue on with the pipe work on the other side.

The GME Shields are available as a; Square Manhole, Round Manhole (providing complete protection on all sides), Octagon Manhole and a 4-Sided Manhole Shield (WTB Series). All trench shields are designed by GME to be used with in the 40,000 to 60,000 lb range.


GME Octagon Manhole Shields are 8 – sided, all – welded, and pre-assembled. They are ideal for contractors, municipal water and sewer departments, plumbers, and all types of utility contractors who are engaged in routine water main or gas line repairs and maintenance work.


The Octagon Manhole Shield features cutouts with bolt-on doors on four sides, allowing clearance and access to junctions and crossing lines.


All GME Octagon Manhole Shields are certified by a registered, professional engineer. The all-steel construction offers strength, and the single wall design keeps the weight low. These trench boxes are equipped with lifting rings for easy loading and unloading. Matching stacker units are available for added depth requirements.



  • Welded steel cross members for added strength
  • 3- inch steel walls
  • One – piece construction*
  • All certified by a professional engineer to meet OSHA requirements
  • Removable bolt-on door

*12′ Octagon manhole shields are a two piece construction to allow for easy shipping.


Find a Location

Griswold Machine & Engineering Manhole Trench Shield Models

Contact Us

  • This field is for validation purposes and should be left unchanged.