With a 280mm diameter and a 185mm invert, this Brett Martin Drain Inspection Chamber Riser is an ideal fit for shallow access chambers. A must-have where branch pipes intersect main drainage pipes, it seamlessly sits atop the inspection chamber base, secured by a reliable rubber seal, ensuring a watertight connection.

Designed for shallow access inspection chambers, this versatile drain riser also easily accommodates additional units for desired height adjustments. Boasting a heavy-duty ribbed riser construction, it effectively prevents deformation. You can pair it effortlessly with 110mm drainage layouts and straight-through or 90° 280mm access bases, delivering a flexible and cost-effective solution.

Features & Benefits: Brett Martin Drain Inspection Chamber Riser Shallow Access 185mm Invert - 280mm

• 280mm chamber diameter and 185mm invert
• Ideal for shallow access inspection chambers
• Provides watertight join with rubber seal
• Expandable with additional drain risers
• Compatible with 110mm drainage layouts
• Cost-effective solution with minimal components
• Meets Building Regulations Part H1 when assembled
• Heavy-duty ribbed riser design prevents deformation

With only two risers, a chamber base and a lid, you can achieve the desired nominal invert depth of 600mm, all with a hassle-free watertight push-fit assembly. Compliant with Building Regulations Part H1, the Brett Martin Inspection Chamber Assembly features double seals on a square cover, ensuring a completely airtight unit.

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.