Lennox 56K26 Flue Box R-22 While this module is manufactured

While this module is manufactured using FENWAL technology

This 20-inch black round fan grille protects condenser fan blades and internal outdoor components from debris

The high-grade alloy construction resists surface corrosion and fatigue

When replacing damaged or corroded lines

As part of the SmartX MX41-7xxx series

Lennox 56K26 Flue Box R-22 While this module is manufacturedThe 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