York S1-025-26392-003 Rollout Switch ensuring the sensor tip is

ensuring the sensor tip is perfectly situated in the pilot flame path

it is backward compatible with 370V applications

Reduces the risk of ignitor damage caused by vibration or improper seating in the burner box

The 391937 and 391937/U are the same Honeywell/Resideo conversion kit

Constructed from stainless steel for maximum corrosion resistance and thermal stability

York S1-025-26392-003 Rollout Switch ensuring the sensor tip isThe York S1 025 26392 003 Rollout Switch is a critical thermal safety component designed for precise combustion monitoring in York, Coleman, and Luxaire gas fired furnaces. This SPST (Single Pole Single Throw) fixed temperature limit is engineered to interrupt the burner circuit if it detects a flame rollout condition, preventing potential equipment damage or hazardous operation. Built by Therm O Disc, this flame rollout switch features a 145 degree F