IDS Raising Pieces offer unique flexibility within the system providing an effective depth of 200mm. Raising pieces obtain their strength from the chamber below and the galvanised steel frame inserted into the recess at the top. It is therefore imperative that both these items are in place for the duration of the installation. Only one raising piece can be used on each chamber.

Two chambers will achieve 463mm depth of cover nominal.

Raising piece will achieve 663mm depth.

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