Brett Martin 280mm Dia. Shallow Access Chamber Invert Base (B2800)

The Brett Martin 280mm Shallow Access Chamber Invert Base (B2800) is a high-quality and durable underground drainage component designed to provide reliable access to shallow inspection chambers. Manufactured from robust, lightweight polypropylene, this chamber base ensures long-lasting performance while being easy to handle and install on-site.

With a 280mm diameter, the B2800 is specifically engineered for use in shallow drainage systems where regular maintenance, inspection, or rodding access is required. It features three 110mm side inlets and a 110mm main channel, giving installers the flexibility to connect multiple pipes with precision. Each connection point is socketed, allowing for a secure fit with standard 110mm uPVC drainage pipes, while ensuring watertight joints to prevent leaks and infiltration.

The invert base is part of Brett Martin’s highly respected underground drainage range, which is fully compliant with BS EN 13598-1 standards for access and inspection chambers. Its smooth channel design reduces the risk of blockages, ensuring efficient water flow throughout the system. When combined with chamber risers and suitable covers, the B2800 creates a complete shallow access chamber solution that is ideal for both residential and commercial drainage projects.

Key Features:

• Strong and lightweight polypropylene construction for durability and easy handling.

• 280mm diameter chamber base, ideal for shallow access installations.

• Three 110mm inlets plus one 110mm main channel for versatile pipe connections.

• Smooth channel design to optimize flow and minimize blockages.

• Compatible with Brett Martin risers, sealing rings, and access covers.

• Manufactured in accordance with BS EN 13598-1 industry standards.

• Suitable for use in both domestic and light commercial underground drainage systems.

Applications:

• Provides access for inspection, maintenance, and rodding of drainage systems.

• Designed for shallow underground drainage where full manhole chambers are not required.

• Commonly used in residential drainage networks, small commercial systems, and new build developments.

Delivery Information:
This product is available for nationwide delivery straight to your site or project location. Delivery is fast, reliable, and handled with care to ensure your chamber base arrives in perfect condition and ready for installation.