The 4" x 2" Black Red Coupling from BOSHART INDUSTRIES INC is designed for effective plumbing transitions. Made from high-quality black steel, this coupling provides a robust and reliable connection between different pipe sizes. With a 4" inlet and a 2" outlet, it is ideal for reducing pipe sizes in low-pressure systems. This coupling complies with industry standards, ensuring safety and performance in various applications. The black finish offers corrosion resistance, making it suitable for both indoor and outdoor installations.