The SEALFAST 3" Coupler x 4" Coupler Stainless Steel is a high-quality connection solution designed for joining different pipe sizes. Constructed from durable stainless steel, this coupler offers excellent corrosion resistance and strength, making it suitable for a wide range of applications, including plumbing and industrial systems. The 3" to 4" size transition allows for versatile use in various piping configurations. This coupler meets industry standards, ensuring reliability and performance in demanding environments.