J-Box Compatibility: Comes with a heavy-duty bracket designed specifically for mounting to vertical or horizontal electrical junction boxes

If the seat is scarred

Smith and Lochinvar boilers and commercial tankless units

this is a dedicated 4-pin harness

The thermomagnetic safety mechanism relies on a millivolt signal generated by a compatible thermocouple

Lennox 17F50 Header Box Kit 318973-401 J-Box Compatibility: Comes with aThe Lennox 17F50 Cold End Header Box Kit is a critical OEM replacement part designed for high efficiency 90% AFUE and above condensing gas furnaces. As a primary collector box assembly, this kit manages the corrosive condensate generated during the heat exchange process, preventing fluid backup that can lead to pressure switch trips and furnace lockout. This heavy duty header box kit (Lennox 619598 46) is engineered for a precise fit on EL296, ML195,