The BULK 4X3 PVC DWV RED COUP from Jones Stephens is an essential fitting for efficient drainage and waste management. This reducer coupling features a 4-inch diameter on one end and a 3-inch diameter on the other, allowing for seamless transitions between different pipe sizes. Made from high-quality PVC, it is designed for durability and resistance to chemicals, making it suitable for various drainage applications. This coupling meets industry standards for DWV systems, ensuring reliable performance in both residential and commercial settings.