Description
The 200mm inspection chamber and riser creates a compact access point for 110mm underground drainage systems. It helps provide access for inspection, rodding and maintenance on smaller foul water and surface water drainage layouts.
This Terrain / Polypipe 4DI600 shallow inspection chamber suits compatible 110mm underground drainage pipework. It is useful for domestic drainage, extensions, garden drainage, outbuildings, repairs and light-duty site drainage work.
The level invert design helps keep the pipe channel aligned through the chamber. Therefore, it is a practical option where a compact inspection point is needed within a 110mm drainage run.
200mm Inspection Chamber for 110mm Drainage
The 200mm inspection chamber creates an access point within a compatible 110mm underground drainage system. It allows the pipe run to be checked, cleaned and maintained when required.
This chamber is a compact option for smaller drainage layouts where a larger chamber may not be needed. However, the chamber must still suit the site depth, pipe layout and access requirements.
- 200mm level invert inspection chamber and riser
- Designed for compatible 110mm underground drainage pipework
- Terrain / Polypipe 4DI600 shallow inspection chamber reference
- Useful for inspection, rodding and maintenance access
- Supplied with 2 plugs for unused entries
- 200mm socket with angular tolerance for pipe variation and ground fall
- Suitable for domestic drainage, extensions and light-duty site drainage work
200mm Inspection Chamber and Riser Setup
This 200mm inspection chamber includes the chamber and riser setup for a shallow drainage access point. The level invert channel helps support a clean pipe route through the chamber.
Official Terrain data lists the 4DI600 shallow inspection chamber with a 200mm socket. The socket has an angular tolerance of ±7°, which allows up to 14° adjustment for pipe variation and ground fall.
Before installation, check the pipe layout, invert level, chamber position and cover requirement. Also, make sure the chamber remains accessible after the work is complete.
200mm Chamber Installation Use
The 200mm inspection chamber should be fitted where the drainage layout needs future access. This may include direction changes, junction points or areas that may need cleaning and rodding later.
Correct bedding, support and backfill help keep the chamber stable. The chamber should sit level, and the riser and cover should suit the finished ground level.
Use compatible 110mm underground drainage pipe and fittings. Also, make sure any unused entries are plugged before the system is backfilled.
Drainage Access for Site Work
This chamber is useful for builders, groundworkers, landscapers and drainage installers working on smaller underground drainage systems. It can be used on new installations, drainage repairs, extensions and outbuilding drainage work.
This product is not a sealed cover on its own. Use it with a compatible cover and frame where the chamber setup requires one.
Always confirm the loading requirement, cover type and finished ground level before installation.
Compatible 200mm Inspection Chamber Products
This 200mm inspection chamber is part of the wider TWS manhole base and inspection chamber range. You can match it with compatible chamber covers, underground drainage pipe, bends, couplers and drainage accessories.
View 200mm manhole inspection chambers at TWS.
View 110mm manhole inspection chambers at TWS.
View all manhole bases and inspection chambers at TWS.
Shop all underground drainage at TWS.
For official manufacturer information, see the Terrain underground inspection chambers product information.







