please verify your model's wiring diagram to ensure multi-stage compatibility

reducing future mechanical stress

making it suitable for continuous duty cycle applications where reliability is paramount

The adjustable differential allows for precise cycling

providing rapid shutdown in the event of flame loss

Lennox X4137 Filter mario please verify your model's wiringThe Lennox X4137 MERV 11 Carbon Pre Filter is a critical component for maintaining peak performance in PureAir PCO14 12 air purification systems. Engineered to handle high velocity airflow while minimizing pressure drop, this 14x25x21 filter serves as the primary stage of filtration, shielding the PCO catalyst and UV lamps from heavy particulate matter. The integrated activated carbon layer provides immediate VOC reduction and odor mitigation,