while moving it outward increases the travel distance

Built with a heavy-duty balljoint mechanism

and debris that compromise system calibration

Always verify your specific system temperature against the Buna N seat limitations

Includes Thermometer

Lennox 39H24 Damper Coupler while moving it outward increasesThe Lennox 39H24 Damper Coupler Left is a critical genuine OEM replacement part engineered for precise airflow management in commercial and residential Lennox HVAC systems. As a veteran technician knows, maintaining the integrity of the linkage between the damper actuator and the louver blades is essential for pressure control and ventilation efficiency. This left hand specific coupler is designed to eliminate slippage and ensure responsive adjustment