450mm Diameter Inspection Chamber Riser – 325mm Height

To be used in conjunction with the 450mm Inspection Chamber Bases B5494 & B5696, this underground inspection chamber riser is 450mm diameter and 325mm in height. Risers are used for extending the chamber depth to your required size, you can stack them or they can be cut to the size you need which you can do with a standard fine-toothed saw. This riser can also be sealed with the use of the B5398 sealing ring.

A typical 450mm chamber system can comprise of a chamber base, risers, ring seals, restrictor ring and a suitable cover & frame.

Manufactured in the UK by Brett Martin also provides the installer with a reliable product that will continue to perform. Combining ease of installation with maximum performance, the chamber assemblies meet requirements of Building Regulations Part H1.

We would recommend this product and the rest of the Underground Drainage range to be installed with Lubricant to help with pipe jointing any rubber seal connections in PVC, clay and concrete.