The Wavin Osma S/Overflow 1E344B 32 x 21.5mm Reducer in Black is designed to adapt pipe sizes in overflow and drainage systems, allowing a smooth transition between 32mm and 21.5mm pipes. Made from durable PVC-U, this reducer ensures a secure, leak-resistant connection for domestic and commercial plumbing applications. Ideal for overflow outlets, rainwater systems, and waste pipe connections.