Polydrain 450mm Diameter Inspection Chamber Riser inc Sealing Ring
Polydrain 450mm Diameter Inspection Chamber Base Riser
This riser is intended for use on the Polydrain 450mm Inspection Chambers.
Ribbed design increases product durability.
Supplied with sealing ring - S450
Polydrain 450mm inspection chamber complies with the following standards and building regulations:
BS EN 13598: 2010
Building Regulations Part H (Maximum invert depth of 1.2m)
Diameter - 320mm
Effective Height - 235mm