Our 110mm Inspection Chambers Base is available with a 320mm base and riser or a 470mm base and riser.
The invert (depth) for the following chambers and risers are as follows:
320 BASE = 185MM
320 RISER = 140MM
470 BASE = 225MM
470 RISER = 235 MM
These durable plastic inspection chambers are manufactured to BS EN 1401-1 BS4660..2000, they are compatible with the following underground drainage systems:
BRETT MARTIN 110mm
Our 110mm Underground Drainage Systems are designed for use in gravity drainage and sewerage applications, up to a depth of 10M. All of our drainage pipes and the majority of fittings are manufactured from Polyvinyl Chloride (PVC-U). The inspection chambers and gully grids are manufactured from polypropylene.