Always verify the part number in your specific unit's illustrated parts list

and 3003 series

This 1/2" bimetal disc limit switch features a fixed open temperature of 170°F and a fixed close temperature of 130°F

preventing the binding or premature component wear often seen with improper damper shaft hardware

and TH8321 VisionPRO models

Copeland Comfort Control (White Rodgers) 3L09-12 Limit Switch Always verify the part numberThe Copeland Comfort Control (White Rodgers) 3L09 12 Limit Switch is a high reliability 1 2" bimetal disc limit control engineered for precision high limit protection in residential and commercial furnaces. This board mounted HVAC limit switch features a fixed open temperature of 220F and a fixed close temperature of 180F. Operating on an open on rise switch action, it serves as a critical safety component to prevent heat exchanger damage or hazardous