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450mm Inspection chamber cover lid & frame

450mm Inspection chamber cover lid & frame

450mm inspection chambers can be used as an alternative to traditional manholes up to depths of 1.2 metres. Depths of less than 1.2 metres can be achieved by cutting the riser between the ribbed sections.

The riser is connected to a separate chamber base with a push fit joint, fitted with a ring seal. If another riser section is used, it can be joined to the one below using the same method.

All Polydrain manufactured products are made from non-porous smooth material.  The  excellent design of the flow profile  prevents the buildup of deposits and blockages.

There is less maintenance required and less pressure needed when cleaning. An advantage that pays off  with reduced maintenance costs.