Lennox 21N39 Scale Insert 319852-301 Whether you are balancing an

Whether you are balancing an HVAC system or calibrating laboratory airflow

providing flexibility during system maintenance or field testing

This product may contain chemicals known to the State of California to cause cancer or reproductive harm

Designed for high-reliability industrial and commercial refrigeration cycles

Lennox 21N39 Scale Insert 319852-301 Whether you are balancing anMaintain peak performance in humidification systems with the Lennox 21N39, a precision engineered scale control insert designed to manage mineral accumulation and ensure consistent evaporation rates. This OEM humidifier replacement part acts as the structural frame and pad holder for high capacity systems, effectively channeling water across the media while trapping scale before it can compromise internal components. Measuring 14 3 8" by 10", this