Lennox 21N39 Scale Insert 318518-761 Durable Construction: Built to withstand

Durable Construction: Built to withstand the temperature fluctuations and chemical environments typical of industrial and domestic heating systems

4 FLA at 120V)

ensuring a rigid and accurate connection

reducing diagnostic time during field repairs

it must be ordered separately

Lennox 21N39 Scale Insert 318518-761 Durable Construction: Built to withstandMaintain 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