The 3" x 1-1/2" Black Red Coupling from BOSHART INDUSTRIES INC is a vital component for plumbing systems requiring size transitions. Constructed from durable black steel, this coupling ensures a strong and reliable connection between pipes of different diameters. With a 3" inlet and a 1-1/2" outlet, it is perfect for reducing pipe sizes in low-pressure applications. This coupling meets industry standards for quality and performance, making it suitable for both residential and commercial use. Its black finish provides added corrosion resistance, ensuring longevity in various environments.