The 4" x 3" Carb Press Red Coup FKM from Merit Brass is a premium coupling designed for high-pressure applications. Constructed with FKM (Fluoroelastomer) seals, this coupling provides excellent resistance to chemicals and high temperatures. Its dimensions of 4 inches by 3 inches make it suitable for various industrial piping systems. This coupling is engineered to meet stringent ANSI standards, ensuring reliability and performance in demanding environments. The red color aids in quick identification, making it an essential component for any professional plumbing or HVAC installation.