Lennox 34M84 – LB-101231 Collector Box

 

The Lennox 34M84 (LB-101231) Collector Box is a genuine OEM replacement component designed for select Lennox gas furnaces. This metal collector box captures and channels combustion byproducts safely through the furnace's exhaust pathway, supporting proper pressure regulation and overall heating performance.

Engineered to meet Lennox factory specifications, the 34M84 provides an exact fit, durable construction, and long-term reliability. It is commonly replaced when corrosion, cracks, or airflow obstruction is detected in the furnace’s combustion assembly.

 

Key features of Lennox 34M84 / LB-101231:

• Genuine Lennox OEM collector box
• Ensures correct routing of combustion gases
• Helps maintain proper furnace draft and pressure levels
• Corrosion-resistant metal construction
• Precision-fit design for compatible Lennox furnace models
• Ideal for preventative maintenance and OEM-quality repairs

 

Application:

This collector box installs in the combustion section of compatible Lennox gas furnaces. It is recommended when restoring airflow, correcting exhaust issues, or replacing a worn or corroded factory assembly.