320mm Chamber Base 185mm Invert - Underground Drainage

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: HEPWORTH 110mm OSMA/WAVIN 110mm POLYPIPE 110mm MARLEY 110mm HUNTER 110mm FLOPLAST 110mm 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.