Underground Manhole Riser 320mm

The 320mm Underground Manhole Riser is used to extend the height of 320mm inspection chambers to meet ground level. It provides a secure, adjustable solution for aligning the chamber opening with surface finishes such as turf, gravel, or paving. Made from durable plastic, the riser is lightweight, easy to handle, and compatible with standard 320mm chamber bases and lids.

Product Details:
✔ 320mm diameter manhole riser
✔ Extends inspection chambers to finished ground level
✔ Compatible with 320mm bases and lids
✔ Lightweight, durable plastic construction
✔ Ideal for use in foul and surface water systems