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Dome Marker Post

The PM-303 Dome Marker is a Cable and Pipeline Marker used as a Warning Sign to mark underground utilities such as:  Fiber Optic Cable, Gas Pipelines, Petroleum Pipelines, Electric Lines, Water Lines, Sewer Lines and all other buried utility lines.


Online Ordering Min/Max Quantity
Minimum – 5 | Maximum – 20
*For orders above 20 please request a quote.

Standard Lead Time
Normally ships in 3-5 business days.

For custom graphics or sizes contact us.


3″ x 6 FT

SKU: N/A Category:


  • The PM-303 is manufactured in the USA from specially formulated resins with UV inhibitors. Its 360˚ cylindrical shape insures that the Dome Marker Post can be seen from all angles on the ground and by air patrols. Unlike decals or hot stamping, the ProMark graphic system has a lifetime guarantee not to fade, peel or chip. Graphics are customized to meet customer specifications and U.S. Department of Transportation regulations. The Marker Post is environmentally friendly and is 100% recyclable. The PM-303 Dome Marker Post is resistant to chemicals and has high impact resistance making it the most durable way to mark underground utilities.
  • The Dome Marker Post has a 3.5” outside diameter and is available in all standard lengths, colors and comes complete with anchor bar. The PM-303 is also available with a PM TS3 Test Station or Vent.


Dome Marker Post
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