IN-TANK OIL HEATER, RIGID CONDUIT 48"L (OR CUT TO SPEC), WALL PLUG-IN, 120VAC, 275W, 100 DEG F THERMOSTAT, 200GAL, QUALITY TH120P. THIS IS A STAND-ALONE UNIT THAT DOES NOT REQUIRE VISCOSITY CONTROL SOFTWARE CHANGES TO INSTALL. SUPPLIER INFO: OEM# USGTH120P IN TANK OIL HEATER, 275W, RIGID, PLUG-IN