The Supreme 4" × 3" SWR Bush is a high-quality pipe fitting designed for efficient and durable drainage systems. Made from premium uPVC material, this bush ensures a secure and leak-proof connection between pipes of different diameters, reducing from 4 inches to 3 inches. It is resistant to corrosion, chemical reactions, and weathering, making it ideal for residential, commercial, and industrial plumbing applications. The Supreme SWR Bush is easy to install, maintenance-free, and ensures smooth wastewater flow in soil, waste, and rainwater (SWR) drainage systems.