As part of Brett Martin's Shallow Access Inspection Chamber Assembly, this Double-Seal Lid is specially designed for pedestrian use. For smooth maintenance, we recommend applying copper-impregnated grease to the lid retaining screws during installation, ensuring effortless removal when needed.

Perfect for 110mm drainage layouts, the 280mm Shallow Access Chamber Assembly comes with options for both straight-through and 90° 280mm access bases. Simplify your setup with just two risers, a chamber base and the lid, meeting the standard invert depth of 600mm without unnecessary hassle or expense.

Features & Benefits: Brett Martin Inspection Chamber Shallow Access Double Seal Lid - 280mm

• Designed for pedestrian use
• For use with Brett Martin's Shallow Access Inspection Chamber Assembly
• Recommended application of copper-impregnated grease to lid retaining screws for easy removal
• Perfect for 110mm drainage layouts
• Requires only two risers, chamber base and lid to meet 600mm invert depth
• Meets Building Regulations Part H1 standards when assembled
• 280mm x 280mm lid size with a 45mm height
• 266mm diameter

Rest assured, the assembly complies with the guidelines outlined in Building Regulations Part H1, ensuring both quality and adherence to regulatory standards.

Please note:

• The invert refers to the distance between the top of the unit and the bottom of the inside of the connecting inlet pipework.