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and 16-13/16"
High Pressure Tolerance: Rated for a maximum pressure of 300 psig
Using a bushing or force-fitting the hub can lead to catastrophic failure
Always verify the specific temperature rise of the equipment before substitution
Broad Model Compatibility: Fits a wide range of Reznor units including UDAP175-225
Lennox 99K63 Rollout Switch and 16-13/16"The 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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