Lennox 17F24 Header Box 326058-757 the Nordyne 904166 is often

the Nordyne 904166 is often the designated relay kit required to provide the necessary 24V-to-240V switching logic for air conditioning integration in older electric furnace models

It is compatible with brands such as Alco Foods

reducing unnecessary service calls for nuisance trips

but includes an LP gas conversion kit to handle propane applications

Lennox 17F24 Header Box 326058-757 the Nordyne 904166 is oftenFor veteran HVACR technicians, the Lennox 17F24 Cold End Header Box is the critical OEM solution for repairing high efficiency heating systems. This genuine Lennox header box kit is engineered to replace legacy part numbers 11U60, 103370 49, and 610261 35. In secondary heat exchanger assemblies, the cold end header box manages the collection and drainage of corrosive condensate produced during the combustion process. Using this Lennox 17F24