Lennox 31L98 Adaptor-Flue is a genuine OEM flue transition component designed to provide a secure and proper connection between the furnace flue outlet and the venting or chimney system. This adaptor plays a critical role in safely directing combustion gases out of the heating unit, helping maintain proper draft, system efficiency, and safe operation.

Engineered to Lennox factory specifications, the 31L98 adaptor-flue ensures an exact fit and reliable performance when servicing or replacing original flue components on compatible Lennox gas furnaces and heating equipment. Proper flue transition alignment is essential for preventing exhaust leaks, maintaining correct airflow, and meeting manufacturer venting requirements.

This OEM flue adaptor is constructed from durable materials suitable for high-temperature exhaust applications and is intended for professional HVAC installation. Using a genuine Lennox replacement part helps preserve system integrity, safety compliance, and long-term reliability.

 

Product overview:

OEM Lennox flue adaptor used to transition furnace exhaust to the venting system, ensuring safe and efficient removal of combustion gases.

Specifications:
Brand: Lennox
Part number: 31L98
Part type: Adaptor-Flue / Flue Transition
Application: Furnace exhaust vent connection
Function: Directs combustion gases from the furnace to the flue or chimney
Installation: Professional HVAC installation recommended
OEM status: Genuine Lennox factory replacement part