Brett Martin 280mm Diameter 90 Degree Chamber Base (205mm invert)

Key Features & Benefits

• 90° Directional Change: Ideal for routing connections at right angles while maintaining easy access for inspection and rodding.

• Watertight Push-Fit Seals: Engineered with high-quality ring seal sockets for a rapid, secure, and completely watertight joint without specialist tools.

• Part H1 Compliant: Fully meets the performance and structural criteria set out in Building Regulations Part H1 for underground drainage.

• Durable Construction: Manufactured from heavy-duty plastic that resists deformation, ground movement, and chemical wear.

• Shallow Access Ready: Pairs seamlessly with standard 280mm risers (B2801) and pedestrian-rated lids to build a complete 600mm-deep access assembly.

The Brett Martin B2803 is a high-performance, 280mm diameter shallow access inspection chamber base designed for modern 110mm underground drainage systems.Specifically engineered to facilitate a sharp change of direction in shallow runs, this chamber base features a unique 90-degree configuration with two 110mm ring seal inlets positioned at right angles to the main flow.

Constructed from robust, impact-resistant plastic, the B2803 provides a watertight, reliable, and easily accessible maintenance point.To achieve a secure, leak-proof seal, it utilizes push-fit connections with integral rubber rings.Ideal for domestic applications such as patios, driveways, and low-depth garden drainage layouts, this chamber base meets all requirements of Building Regulations Part H1.

Note: Shallow access chambers must only be installed to a maximum depth of 600mm.To achieve this nominal depth, combine this chamber base (205mm invert) with two B2801 Shallow Access Chamber Risers and a compatible cover and frame.

Technical Specifications

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