Discover a durable solution for your sewage system with the 320mm Drainage Manhole Inspection Chamber Riser. Standing at 150mm high, this robust riser is designed to withstand the rigours of constant use, featuring corrosion and rust-resistant properties for longevity. Ideal for inspecting and maintaining your drainage systems, this single-pack Inspection Chamber offers a reliable seal to prevent ingress of debris and unwanted visitors. Its sturdy construction ensures safe and easy access for maintenance tasks, making it an essential addition to any property's infrastructure.