Replacement for Thermocouple TT15C-11 12" long Tank Top Htrs 23-3560 This 12" thermocouple is used on all Tank Top heaters made by GHP. Brands include Dyna Glo and Thermoheat. Also part# 23-3560 TT15CDPG, TT15CDGP, TT15CL TT30CDPG, TT30CDGP, TT30CL · Item Code: TT15C-11 · Weight 3.00 OZ