
- The unique shape takes-on the best characteristics of square and round manhole shields. Think of this shield as a square shield that can be dug inside of, with those pesky, backfill-eating corners knocked off.
• Potential savings of 3 yards of fill over a square box
• Smooth outside wall slips out of the ground easier than a round shield - 4-sided protection
- Trapezoidal cutouts can accommodate larger pipe sizes than square doors
- Single wall light weight construction requires less machine
- Double pinned stack pins allow the stack to be lowered in all at once