Lennox 21N39 Scale Insert 318518-761 reducing diagnostic time during field

reducing diagnostic time during field repairs

Durable construction minimizes moisture-related signal failures in high-vibration commercial HVAC environments

It is engineered specifically for use in high-efficiency units such as the Lennox G40

ensuring a rigid and accurate connection

4 FLA at 120V)

Lennox 21N39 Scale Insert 318518-761 reducing diagnostic time during fieldMaintain 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