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Chrome-bevel sheet on grid paper — specs and return notes filed under the bay.
The White-Rodgers 21D64-2 is a robust 120V silicon nitride ignitor upgrade kit engineered for high-durability performance in residential gas furnaces
which leads to voltage leaking to the ground frame rather than reaching the burner assembly
reducing unnecessary service callbacks for manual resets
This Normally Closed (NC) switch features a 3-inch insertion length
Lennox 99K63 Rollout Switch The White-Rodgers 21D64-2 is aThe Lennox 99K63 Rollout Switch is a critical safety component designed for precise thermal monitoring in residential and commercial gas furnaces. Engineered as a manual reset rollout switch, this part is calibrated to actuate at 250 degrees F (+ 12F), immediately interrupting the burner circuit if it detects flame rollout or excessive heat concentrations outside the combustion chamber. This OEM Lennox replacement part, also identified by part number
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