The thermocouple is approximately 39 inches longs and will replace most of the millivolt thermocouples.

The Q298514 Thermocouple is approximately 39 inches longs and will replace most of the millivolt thermocouples used by DESA International on their line or vent-free natural gas and propane wall heaters. This Thermocouple is the OEM replacement thermocouple for many of the heaters, fireplaces and gas log produced .

ThisThermocouple provides a Millivolt Signal to the Gas Valve allowing the appliance to stay running.If this thermocouple has become weak it will not allow the Pilot Light to stay running and your heater will completely shut down.This Thermocouple part number fits Desa, Glo-Warm, Temp Heat Vent Free heaters, Comfort Glow Vent-Free Heaters, Blue Flame Wall Heaters, Reddy Garage Heaters, Vanguard Gas Logs sets and many other heaters, Gas logs and fireplaces  .

Heating Parts THERMOCOUPLE 39' INCH