103972-02 THERMAL SWITCH T-O-D60T12 314643 F110-10F

The 103972-02 Thermal Switch (Thermodisc) is a replacement thermal switch for various fireplace systems by DESA/FMI and other affiliated brands including the Desa Slim Line series of heaters.

The 103972-02 and 103972-01 are the same switch and can be used as a backwards compatible switch.

This normally open thermal switch is the replacement thermodisc for the following fireplace series numbers and others:

LSL18NT
LSL18PT
SL18NT
SL18PT
VSL18NT
VSL18PT

The 103972-02 Thermal Limit Switch has the following alternative series/part numbers printed on the actual component:
T-O-T60T12
314643 / 314047
0740
F110-10F