Manhole Accessories

Fiberglass manholes can be customized with a variety of accessories to meet the specific needs of your job. All accessories are made with fiberglass, which is the same versatile material Openchannelflow uses for manholes.

Make the most of your manhole applications with accessories like: 

• Benches that provide a safe and secure place to stand at the bottom, even if a shoulder hasn’t been poured around the flume. Benches also help direct flow backup into a flume and out of the manhole.
• Couplings, in addition to the standard, 2-inch [5.08 cm] one that comes with most fiberglass manholes, you can add larger or more couplings to bring sample / power / sensor lines and piping.
• Extensions that make field installation possible to add depth to a manhole. Extensions are available as a slip coupling or an extension kit that offers the option of a different top style.
• Vents circulate air and reduce the build-up of hazardous gasses.
• Mounting Panels that make it possible to install equipment inside.
• Shelves that can be used to store equipment inside.
• Two-Piece Construction where the combined flume / manhole structure is too large or cumbersome to ship / handle as a single piece, the manhole barrel can be flanged for field connection.