The Brett Martin B6255 is a 450mm diameter round inspection chamber cover and frame, specifically designed for driveway applications.

🔧 Key Features

• Size: 450mm diameter
• Material: Tough polypropylene with a webbed design for added strength
• Load Rating: Withstands up to 50kN (approx. 5 tonnes) when properly supported by a concrete plinth
• Design: Screw-down lid secured in frame to reduce risk of accidents, injury, or removal
• Application: Suitable for residential driveways and compatible with Brett Martin’s 450mm inspection chamber systems
• Compliance: Meets Building Regulations Part H1 and tested to EN124 A15 standards

This cover is ideal for use in private driveways where occasional vehicle access occurs. It’s not intended for heavy traffic or turning areas, so if larger vehicles are expected, a higher-rated cover (like B125) may be more appropriate.

Want help building a full chamber setup or checking compatibility with other Brett Martin components? We’ve got you covered.