TH120FP IN TANK OIL HEATER, FLEX. SEALTIGHT 42"L (OR CUT TO SPEC), WALL PLUG-IN, 120VAC, 275W, 100 DEG F THERMOSTAT, 200GAL, QUALITY TH120FP. THIS IS A STAND-ALONE UNIT THAT DOES NOT REQUIRE VISCOSITY CONTROL SOFTWARE CHANGES TO INSTALL. SUPPLIER INFO:USGTH120FP IN TANK OIL HEATER, 275W, FLEX, PLUG-IN