Lennox 28W44 Flue

The Lennox 28W44 Flue Exhaust Tee is a critical OEM replacement part designed for precision venting in high-efficiency gas furnaces. Engineered from rugged steel, this flue assembly ensures the safe and streamlined redirection of combustion gases, maintaining the atmospheric integrity of the heat exchanger circuit. As a veteran-grade HVAC exhaust component, the 28W44 is built to withstand high-temperature cycles without structural degradation or seal failure. Featuring a compact tee-shaped geometry—standing 27.2 inches high with a 6.4-inch width—it minimizes flue gas turbulence and backpressure, which is essential for preserving furnace inducer motor performance. This genuine Lennox furnace part (also referenced by part number LB-108343B) is a direct fit for the G41UF and G43UF series. For contractors, utilizing this ANSI-compliant exhaust tee ensures exact alignment with existing vent piping, reducing installation time and eliminating the risk of carbon monoxide leaks associated with non-spec aftermarket fittings.

• Durable Steel Construction: High-gauge rugged steel protects against corrosion and thermal fatigue in demanding venting environments.
• Optimized Airflow: The precision-engineered flue exhaust tee design reduces internal turbulence for steady draft inducer operation.
• Direct OEM Compatibility: Specifically designed for Lennox furnace models G41UF and G43UF, ensuring a leak-proof furnace vent connection.
• Compact Profile: Engineered for tight mechanical closets, allowing for easier HVAC venting installation and maintenance access.

Which Lennox models are compatible with the 28W44 Flue Tee?
The Lennox 28W44 is a direct OEM replacement for various residential units, most notably the G41UF and G43UF series furnaces, including the 24B and 36B cabinet sizes.

What are the physical dimensions for installation planning?
This flue assembly measures approximately 27.2 inches in height, 6.4 inches in length, and 4.4 inches in width, weighing roughly 2.06 lbs. Verify your cabinet clearance before beginning the exhaust vent repair.

Why should I use a genuine Lennox 28W44 over a universal tee?
Using the Lennox 28W44 Flue Exhaust Tee ensures the vent system meets original factory static pressure specifications. Universal parts often lead to improper drafting or inducer motor strain.

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.