315mm Diameter Inspection Chamber Riser – 185mm Height

To be used in conjunction with the 315mm Inspection Chamber Base (B3150), this underground inspection chamber riser is 315mm diameter and 185mm 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 has a built in seal and you should always ensure when installing risers that the integral rubber seal is located to the bottom groove of the riser.

A typical chamber system comprises of a chamber base, risers 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.