Midplas Plumbing & Building Merchants
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.
