Lennox 80K09 Ignitor These are standard for the

These are standard for the Ultra (Commercial and Residential)

the 156T2548A is specifically designed for the larger commercial T7400

the number of cores required depends on the specific capacity of your replaceable core filter-drier shell (e

this kit is specifically sized for 1/2" and 3/4" units

the RIBU1S is a self-contained unit with a plenum-rated housing

Lennox 80K09 Ignitor These are standard for theThe Lennox 80K09 Ignitor is a critical OEM replacement component designed for high performance ignition in residential and commercial gas furnaces. Engineered as a spark ignitor electrode, this part is essential for initiating the combustion process by delivering a consistent, high voltage spark to the burner assembly. This specific model, often cross referenced as Lennox 80K0901, features a robust "L style" electrode configuration with a total length