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The Manhole Barrier System at a glance…

Solid 304 stainless steel construction - Extremely difficult to drill or cut through; won’t rust or corrode.

Full-size barrier - Blocks the entire manhole…even if the cover is missing.

Locks manholes tight - Keeps thieves, saboteurs, vandals, and terrorists above-ground and visible -- and out of your underground systems where they can remain unseen and really do damage

Self-lubricating pressure bearing - Easy to open; no lubrication required.

A single integrated system - Completely self-contained – no parts to secure or assemble.

Stainless steel pins driven by linear high pressure rods secure the barrier system to the manhole flange - Installs in any manhole in less than 5 minutes; barrier cannot be forcibly removed.

Lightweight - Weighs only 35 pounds – can be transported and installed by a single worker.

 Unlocks only with your coded "T" wrench (key). Optional Pro "T" wrench can be customized with your logo - Prevents unauthorized personnel from accidentally entering the wrong manhole; can be opened and entered in seconds for fast access.

Fits any size manhole - Available in diameters ranging from less than 32 inches to more than 44 inches… can be custom made to fit any underground access hole.

Standard warning plate with optional identification tag - Deters unauthorized entry to manhole; alerts the proper authorities that you own manhole and control access.

Long service life - Stainless steel won’t rust or corrode. Covered by our unconditional 10-year replacement guarantee.

Rapid ROI - Pays for itself many times over by preventing service shut-downs and infrastructure damage.

U.S. Patent No. 6550294 - Unique technology with unmatched level of access protection.

Made in the U.S.A. - Prevents tampering by foreign terrorists.

How it Works


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