The Multiple Flue Orifice #43 is a precision-engineered component designed for use in hot water heating systems. This orifice is crafted from high-quality materials to ensure durability and optimal performance. It is specifically designed to regulate flue gas flow, enhancing the efficiency of your heating system. The orifice meets industry standards for safety and reliability, making it a critical component for both residential and commercial applications. Its compatibility with various heating systems ensures that it can be easily integrated into existing setups, providing a reliable solution for flue management.