Lennox 52M63 Collector Box 320788-704 including the "Blue" series and

including the "Blue" series and Sensi models

Low Resistance Connections: Features factory-welded terminal bolts to maximize heat transfer efficiency and prevent terminal burnout

1050 RPM speed for efficient airflow

While this 1075 RPM motor is often used in multi-speed applications

Lennox 52M63 Collector Box 320788-704 including the "Blue" series andThe Lennox 52M63 Collector Box is an essential OEM component designed for the efficient management and venting of combustion byproducts in high efficiency residential furnaces. This flue collector box is engineered specifically for the Lennox G40, G43, G50, G51, and G61 series gas furnaces, serving as the critical interface between the heat exchanger and the combustion air inducer. Constructing a reliable seal at the "cold end," the 52M63 ensures that