The Brett Martin B5494 is a robust 450mm diameter inspection chamber base designed to provide easy access for maintenance and inspection of underground drainage systems. Developed by esteemed brand Brett Martin, this high-quality product is made from durable plastic materials, ensuring resistance against environmental pressures. The chamber base features a 110mm inlet, allowing for smooth sewage flow and easy connection to existing pipework. Ideal for both domestic and commercial applications, the B5494 is an essential component for efficient sewage management.