The Mueller Streamline 3-Way Mixing Panel features a 1-1/4" size and is designed for use with 26-99 pumps. This panel is constructed from high-quality materials ensuring durability and reliability in various applications. It is ideal for hydronic heating systems, providing efficient temperature control and mixing capabilities. The panel's dimensions and specifications make it compatible with standard plumbing systems, ensuring easy installation. This product meets industry standards for performance and safety, making it a trusted choice for professionals.