The 3" Merchant Coupling from BOSHART INDUSTRIES INC is a robust black steel fitting designed for connecting two pipes of the same diameter. With a nominal size of 3 inches, this coupling is ideal for various plumbing applications, ensuring a secure and leak-proof connection. Its durable construction provides resistance to corrosion and wear, making it suitable for both indoor and outdoor use. This product meets industry standards for quality and performance, making it a reliable choice for professional and DIY plumbing projects.