The Polypipe MU311W Reducer 40mm from 50mm is a durable PVC-U fitting designed to connect different pipe sizes in soil, waste, and vent systems. Its robust construction ensures a secure, leak-free transition from 50mm to 40mm pipework. Ideal for both domestic and commercial plumbing applications, this reducer is easy to install and built for long-lasting performance. Available at Plumbco for professional plumbing solutions.