Lennox X4137 Filter 326058-757 facilitating efficient BTU output and

facilitating efficient BTU output and consistent heat transfer

Precise Superheat Control: Engineered with a #6 orifice to provide exact refrigerant flow adjustments based on real-time load requirements

This model features a 15mm orifice providing a Kv value of 4 m³/h

The Armstrong Fluid Technology 174031MF-043

watertight seal

Lennox X4137 Filter 326058-757 facilitating efficient BTU output andThe 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,