Lennox 56K26 Flue Box 318423-701 Comprehensive Components: Includes the Honeywell

Comprehensive Components: Includes the Honeywell S9230F1014 control board

This part is essential for maintaining the proportional feed action required in low-pressure steam and hot water systems

Durable Material: Engineered to handle high thermal and mechanical stress typical of industrial gas-fired heaters

The 10k ohm NTC remote sensor compatibility allows for flexible mounting

This is a straightway valve

Lennox 56K26 Flue Box 318423-701 Comprehensive Components: Includes the HoneywellThe Lennox 56K26 Flue Box (also identified as LB 79560) is a critical OEM replacement part engineered for high efficiency gas furnaces and boilers. Constructed from corrosion resistant stainless steel, this collector box is designed to manage the transition of combustion byproducts, ensuring that exhaust gases are safely and effectively channeled from the heat exchanger into the venting system. For a veteran technician, the 56K26 represents a reliable