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3M Trench Box


3M Trench Box

The 3” wall series of trench boxes are designed by GME with plumbing, utility and municipality workers in mind. These shields are lightweight and provide protection for the shallow depths required for light-duty repair work. This series of trench shields are ideal for rubber tired back hoes and excavators up to 30,000 lb.


The 3M trench shields are ideal for plumbing and utility work, maintenance and repair and other light duty applications. The narrow 3-inch wall in the 3M Series is the lightest weight steel trench box we manufacture.

  • Only fully gusseted steel knife edge
  • Trapped thru wall collar assemblies with additional inside reinforcement for increased strength and stiffness
  • Optional adjustable collars
  • D – rings for ease in lifting
  • 5″ Sch. 80 spreader pipe
  • All certified by a Professional Engineer to meet OSHA Standards
  • Customizable
  • Stackable


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Griswold Machine & Engineering GME Trench Boxes Models

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