450mm Inspection Chamber Base 160mm/110mm Inlets

450mm inspection chamber base designed for underground foul and surface water drainage systems. This component provides dependable access for inspection, cleaning, and maintenance while accommodating both 160mm and 110mm drainage pipe connections. Manufactured from high-strength, durable polypropylene, the base ensures long-term structural integrity and watertight performance under load. Its multiple inlets allow direct connection of mixed-diameter pipework, making it suitable for system layouts where 160mm mains and 110mm branch lines converge. Commonly used as a connection point within larger domestic and light commercial installations, the 450mm base enables straightforward transitions between different pipe sizes without additional fittings. It supports flexible system design at junctions, changes in direction, or depth variations. Designed for use with standard 450mm risers and covers, the component forms part of a modular assembly providing safe and efficient access to underground drainage networks. Its robust manufacture and precise jointing design ensure lasting performance in a range of site conditions.