Lennox 93M29 Flue Assembly

The Lennox 93M29 Flue Assembly (also identified as LB-74816B) is a critical OEM replacement part engineered for high-efficiency gas furnaces, including the G51MP and G61MP series. This flue tee exhaust assembly kit is constructed from high-grade stainless steel to withstand corrosive combustion byproducts and thermal cycling. With a total length of approximately 20.93 inches, it ensures a precise fit for venting systems, facilitating the safe transition of exhaust gases from the heat exchanger to the external vent pipe. As a direct replacement for legacy part numbers 61M37 and LB-100741B, the 93M29 maintains the integrity of the combustion process by preventing flue gas leakage and ensuring proper draft. For technicians performing furnace repair or routine service, this assembly provides the structural reliability required to meet stringent ventilation codes and manufacturer specifications for Lennox HVAC equipment.

• Direct OEM Compatibility: Specifically designed to replace Lennox 93M29, 61M37, and LB-74816B without the need for field modifications.
• Corrosion Resistance: Manufactured from stainless steel to prevent premature failure caused by acidic condensate in high-efficiency systems.
• Optimized Exhaust Flow: Engineered for minimal resistance, ensuring the exhaust assembly maintains the correct static pressure for stable burner operation.
• System Safety: Crucial for preventing carbon monoxide intrusion by providing a seamless, airtight connection for furnace ventilation.

• Which Lennox furnace models are compatible with the 93M29 flue assembly? This part is primarily used in Lennox G51MP and G61MP residential gas furnaces. Always verify the part number against the unit’s data plate or service manual before installation.
• Can this flue tee be used to replace plastic or PVC venting components? No, this is a specific flue tee exhaust assembly designed for the internal cabinet transition. It must be used in accordance with the original equipment design and local mechanical codes regarding venting systems.
• What are the signs that a flue assembly needs replacement? Look for signs of "pitting" or rust on the metal, visible cracks, or soot accumulation around the tee connection, which suggests a breach in the combustion gas exhaust path.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.