Feature●Part # 099538-01 ,099538-02, H06F-18, H06F●Thermocouple that was used on 35k, 50k, & 100k BTU LP (propane) heaters made by Desa. Length is 18”●Fits Reddy: RLP35 , RLP50, RLP50A, RLP100, RM100LP●Fits Remington: REM35LP, REM50LP, REM50LPA, REM100LP●Fit Universal / All Pro models 30FAS or SPC30Description Thermocouple that was used on 35k, 50k, & 100k BTU LP (propane) heaters made by Desa. Length is 18”,