The Brett Martin 315mm Dia. Shallow Access Chamber Base (190mm Invert) including 2 Socket Plugs is a compact inspection chamber base designed for shallow drainage systems. Supplied with socket plugs for flexible connections, it supports reliable access for inspection and maintenance.
The Brett Martin 450mm Dia. Chamber Base (225mm Invert) with 3 Socket Plugs – 110mm is a versatile inspection chamber base for 110mm drainage systems. Supplied with socket plugs for unused inlets, it supports flexible chamber configuration with reliable access for maintenance.
The Brett Martin 450mm Dia. Chamber Base (225mm Invert) with 3 Socket Plugs – 160mm is a robust inspection chamber base designed for 160mm drainage systems. With a 450mm chamber diameter and included socket plugs, it supports flexible configuration and practical access for maintenance.