The 3-1/2" Black Merchant Coupling from BOSHART INDUSTRIES INC is designed for connecting two pipes in plumbing systems. Constructed from durable materials, this coupling offers excellent resistance to corrosion and wear. With a size of 3-1/2", it is suitable for various applications, ensuring a secure and reliable connection. This product meets industry standards for performance and safety, making it a trusted choice for professionals. Ideal for both residential and commercial plumbing projects, it is compatible with standard NPT connections.