Description
The screw down cover and frame is a budget access cover for compatible 320mm underground drainage chamber systems. It provides a simple access point for inspection, rodding and maintenance on smaller domestic and light-duty drainage layouts.
This 320mm budget cover and frame is listed as a City Plastics product on the current TWS product data. It has an actual lid size of 345mm and is described as non sealed.
The screw down design helps keep the cover in place while still allowing access when the drainage chamber needs checking or cleaning. It is a practical budget option for garden drainage, paths, repairs, extensions and light-duty underground drainage work.
Screw Down Cover for 320mm Manhole Chambers
The screw down cover is used to close the top of a compatible 320mm inspection chamber. It helps protect the chamber opening while keeping access available for future maintenance.
This product is a budget, non sealed cover and frame. Therefore, it should only be used where a non sealed cover is suitable for the installation.
- 320mm screw down cover and frame
- Budget cover option
- Listed brand: City Plastics
- Non sealed cover and frame
- 345mm actual lid size – supplier-stated
- Suitable for compatible 320mm inspection chamber systems
- Useful for inspection, rodding and maintenance access
- Suitable for light-duty domestic drainage areas where appropriate
Screw Down Cover and Frame Connection
This screw down cover and frame should be fitted to a compatible 320mm chamber system. Before installation, check that the chamber top, frame and cover are the correct size for the chamber being used.
The frame should sit level and be properly supported as part of the finished chamber installation. Also, make sure the cover can still be accessed after the surrounding surface is finished.
Because this is a non sealed budget cover, do not use it where a sealed chamber cover is required. For those installations, choose a compatible sealed cover and frame instead.
Screw Down Cover Installation Use
The screw down cover should be installed as part of a properly supported inspection chamber system. Correct bedding, backfill and frame support help keep the chamber stable after installation.
Always confirm the cover loading, chamber compatibility and finished ground level before installation. Do not use this product in a driveway or trafficked area unless the loading and site specification confirm it is suitable.
This product is a cover and frame only. It is not a chamber base, riser or sealing ring on its own.
Budget Cover for Drainage Access
This cover and frame is useful for builders, groundworkers, landscapers and drainage installers working with compact 320mm chamber systems.
It can be used on suitable domestic drainage layouts, garden drainage, repairs and extensions where a basic non sealed inspection cover is required.
Compatible 320mm Manhole Chamber Products
This screw down cover is part of the wider TWS 320mm manhole chamber range. It can be matched with suitable 320mm chamber bases, risers, sealing rings, adaptors and underground drainage fittings where compatible.
View 320mm manhole 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 general manhole cover loading guidance, see the JDP manhole cover loading guide.
