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OSHA Danger Manhole Warning Barrier™: Confined Space - Permit Required For Entry

OSHA Danger Manhole Warning Barrier™: Confined Space - Permit Required For Entry
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Custom Options


M4 - Cover Thickness:

M1 - Cover Top Diameter:

M2 - Cover Underside Diameter:

M3 - Manhole Diameter:

M4 - Cover Thickness:

*At least one field is required to order this product.

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Make the message clear by obstructing access to a confined space manhole.

  • Designed to fit securely in the mouth of manhole, impede entry into a confine space
  • Clearly indicate a permit is required for entry into a manhole
  • Traditional OSHA-style signs, tags and labels are the most widely recognized design format in the industry
  • Danger header indicates a hazardous situation that, if not avoided, will result in death or serious injury

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Product Description
Manhole Warning Barrier™



Stops Immediate Entry

The barrier fits right inside the manhole, making it visible only when the manhole cover lid is removed. For added safety, the barrier prevents immediate entry by requiring the individual to physically remove the barrier before entering the manhole.



Durable Yet Lightweight

The barrier is molded from 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. Outer ring is cut to fit the exact inside diameter of the manhole.



Instant Identification

Durable adhesive vinyl legend label (11 1/2" octagon) alerts workers that a permit is required before entering the manhole. Two “NO STEP” vinyl labels (1 1/2" x 8") are included for the lip to alert that the barrier is not designed to support the weight of an individual.





*** ALL manhole cover measurements below (M1 - M4) only required if ordering Style C. See diagram below for required measurements by style.***



Custom Messages also available. Contact us for a quote. Refer to part number MWB215 for 24" - 26" or MWB225 for 26 1/2" - 30".
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