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Knockouts and Custom Holes

When conduit or cables cannot be routed deeply enough to enter the bottom of a Modular Ground Sleeve unit, holes or knockouts can be provided in the sidewall panel.  Occasionally, trench channel can open into an MGS unit, causing it to function as a pull box.  Fibercrete® can be drilled with any masonry tools onsite or Concast can predrill or void out required openings or knockouts (KO).

Holes and Knockouts are typically needed:

  • When used in conjuction with a trench system.
  • For duct bank or conduit entry.
  • For substation control building applications.