Manhole Warning Barrierâ„¢ | Hazard Signs | Safety Signs | Warning Signs

Manhole warning barrier

The Manhole Warning Barrier™ provides the effective means to mark the location of a dangerous confined space. The barrier fits right inside the manhole, making it visible only when the manhole cover is removed. For added safety, the barrier stops immediate entry by requiring the individual to physically remove the barrier. Barrier is molded from clear plastic, making it lightweight for easy handling-yet still durable enough to withstand harsh environments. Two large slots in the inner ring allow for water and debris to pass, as well as proper air circulation- to ensure the barrier does not trap hazardous gases or fumes. The outer ring is cut to fit the exact inside diameter of the manhole.

SKU	Size
MWB240	21-26”
MWB260	26.5-30”