Description
Product Description
This 450mm inspection chamber kit for 110mm drainage systems provides a complete, configurable solution for shallow underground drainage applications.
Supplied as a modular inspection chamber system, the kit includes a chamber base, riser sections and a selected cover and frame, allowing the final depth to be adjusted on site to suit invert levels and ground conditions. Unlike pre-assembled chamber kits, this system offers greater flexibility during installation and helps avoid incorrect sizing on site.
The chamber base features multiple inlet connections to suit typical drainage layouts, while riser sections are added as required to achieve the desired depth up to 1.2m in line with standard non-man entry installations.
Cover options include A15 (15kN) for pedestrian areas such as gardens and landscaped zones, or B125 (35kN) for driveways and areas subject to light vehicle traffic. B125 covers are recommended for most domestic installations where vehicle loading may be present.
Most customers choose a 700mm depth (2 risers) with a B125 cover for typical domestic drainage installations.
Suitable for foul and surface water drainage systems, this 450mm inspection chamber is designed for use with 110mm underground pipework and is compliant with typical UK drainage requirements.
Manufactured in the UK from durable polypropylene, this system provides a lightweight, robust and reliable solution for long-term performance in underground drainage applications.
Key Benefits
- Complete inspection chamber kit – supplied ready for assembly
- Compatible with 110mm underground drainage systems
- Multi-inlet base (45° and 90° connections)
- Modular riser system for adjustable depth
- Supplied with sealing ring for watertight installation
- Lightweight polypropylene construction for easy handling
- Suitable for installations up to 1.2m depth
- Manufactured from recycled material in the UK
Typical Applications
- Domestic drainage systems
- House extensions
- Small developments
- Surface water and foul drainage access
Installation & Compliance
Supplied as a modular inspection chamber system for on-site assembly, allowing the chamber depth to be adjusted during installation to suit invert levels and site conditions.
Suitable for shallow underground drainage systems in domestic and light commercial applications, including foul and surface water drainage.
Maximum installation depth: 1.2m in accordance with typical UK Building Regulations for non-man entry inspection chambers.
What’s included
Supplied as a complete kit for on-site assembly (base, risers and selected cover)
Risers are supplied loose and assembled on site to achieve required depth
-
- 1 x 450mm inspection chamber base (110mm inlets)
- Selected number of 450mm riser sections (based on chosen depth)
- 1 x selected cover and frame (A15 or B125, round or square)
Supplied as individual components for on-site assembly. Risers are not pre-assembled, allowing flexibility during installation.
Optional Add-On:
- 450mm chamber sealing ring (recommended for watertight installation)
Delivery & Lead Time
Lead time is typically 2-3Â working days, subject to availability at the time of order. Deliveries are made on large commercial vehicles and goods are supplied palletised, with customer offload normally required. If site access is restricted or mechanical offload is needed, please advise at the point of order so alternative arrangements can be made.
- Chamber Diameter: 450mm
- Base Depth: 236mm
- Riser Height: 233mm each
- Pipe Compatibility: 110mm
- Material: Polypropylene
- Colour: Black
- Compliance: BS EN 13598-1


























