Lennox 29L43 Collector Box 318423-701 featuring an automatic reset and

featuring an automatic reset and a stem for knob adjustment

Precision Balance: The factory-balanced wheel minimizes vibration and bearing fatigue

contractors can access advanced diagnostic alert codes

Always verify the specific wiring requirements for your model’s defrost board and contactor before installation

Lennox 29L43 Collector Box 318423-701 featuring an automatic reset andThe Lennox 29L43 Collector Box is a critical OEM component designed for high efficiency condensing gas furnaces. As a veteran technician, you know that the furnace collector box (also known as the cold end header box) is the primary collection point for combustion condensate before it enters the drain trap. This genuine Lennox replacement part, measuring 16 11 16 x 4 inches, is engineered for a precise fit with the secondary heat exchanger, ensuring