Passive Fall Protection Safety Products

Trench Box Clamp System

Guardrail Fall Prevention for Utility Trenches

Meets OSHA Requirement 1926.502(b)

OSHA compliant leading edge fall protection system for use with trench boxes or trench shields.

Total Trench Box Safety
Trench boxes provide safety for workers down in the trench. What about workers working near the fall edge of the trench? For above-ground fall prevention rely on Garlock Safety System’s heavy-duty trench box clamp and RailGuard 200™ railing.

Easy Setup
One person can quickly install the Trench Box Clamp to trench boxes ranging from 1” to 9” thick. The heavy-duty tensioner screw can be tightened by hand or for maximum productivity use a speed wrench. Use tools to reach the required torque of 90-foot pounds.

Install the railing and workers are now protected and can safely work near the trench edge.

View Other Products For:

  • Meets OSHA  fall prevention requirements
  • Heavy duty steel construction, zinc plated
  • The wide adjustment range for use on trench boxes from 1” to 9” thick
  • Quick and easy installation
  • Select from a wide range of RailGuard 200 railings including adjustable rails



Clamping range 1” to 9”
Rail height 42” above trench box wall
Finish Zinc plated
Weight 14 lbs.
Torque requirements 90 foot-pounds

Due to continuous improvement, specifications are subject to change without notice.

Part No Description
425-001-601 Trench Box Clamp, 1-9” clamping range, zinc plated
402335S 10.0 ft. Rail – safety yellow
404977S 8.0 ft. Rail – safety yellow
402337S 5.0 ft. Rail – safety yellow
404654G 10.0 ft. Rail – galvanized
406930G 8.0 ft. Rail – galvanized
404656G 5.0 ft. Rail – galvanized

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