The 3 X 4 - 3-1/2" 3M FS Tolerance fitting by Service Metal Products is engineered for precision and durability. This fitting is designed to accommodate various piping configurations, ensuring a secure and leak-free connection. Made from high-quality materials, it meets industry standards for performance and reliability. Ideal for use in HVAC and plumbing applications, this fitting provides excellent flow characteristics and is compatible with a range of systems. Its dimensions are optimized for easy installation and long-term use.