Manhole Riser Ring Testimonial: Westminster, MD Utility Maintenance Department

The riser ring that you provided us with was made much more durable and solid than what we were using before. Also the ease of installation was amazing. We were able to install the ring in less time than it took us to remove the manhole cover. The rings we used before had set screws…

J. Thomas, LTD. - Custom 30inch Manhole Riser Ring Installation - Side View

30inch Manhole Riser Ring Installation

Recently, a 30 inch custom manhole riser ring was designed and developed by J. Thomas, LTD. The application for the steel riser ring was to keep the exposed manhole from being covered up by the dirt embankment next to it. Custom 30″ Manhole Riser Ring for embankment installation The customer contacted J. Thomas, LTD. to…