320mm Diameter Chamber Riser 135mm High

Product Description

Raise your inspection chamber cover height or adjust for finished ground levels with this 320mm Diameter Chamber Riser 135mm High. Essential for chamber assemblies, this riser allows you to align the chamber lid flush with paving, driveway surfaces, or landscape finishes, ensuring safety, aesthetics and regulatory compliance. It’s compatible with standard 320mm chamber bases and lids, making it suitable for either new installations or retrofits.

Constructed from durable PVC-U (or comparable underground drainage-grade plastic), this riser is designed to resist moisture, frost, and soil pressure. Its 135mm height provides sufficient increase without compromising stability or structural strength. The 320mm diameter matches chamber lids and riser ring sizes, so it offers a uniform, secure connection. Installation is straightforward: fit the riser on top of the chamber base, seal or ring-seal as appropriate, then overlay your choice of lid and cover to the finished surface.

Key Features

• 320mm outside diameter, matching standard chamber components.

• Height: 135mm, for raising lids to surface level.

• Durable plastic construction designed for underground exposure and load-bearing (pedestrian, light traffic where applicable).

• Compatible with standard chamber bases, riser lids, frames etc.

• Provides a sealed joint when used with proper sealing ring or gasket.

Benefits

• Surface alignment: Lets you bring the inspection chamber lid flush with paving, slabs, or driveway surfaces — avoiding trip hazards or visual disruptions.

• Easy retrofitting: Great for upgrading existing chambers where levels have changed (e.g. new paving or road surfacing).

• Cost-effective: Instead of replacing full chamber assembly, adding a riser solves height mismatch.

• Durable & low maintenance: Built to resist underground conditions—moisture, dirt, ground movement—with minimal upkeep.

• Safe and compliant finish: A properly installed riser helps ensure lid seating is secure, reducing risk of loose lids or cover failure.

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