"This Powerblanket Pipe Heater Wrap is the easy way to thaw and protect pipes from freezing. Ideal for pipelines, oil fields, warehouses, valves and more. U.S.A. Watts 720, Amps 6, Color White, Style Standard, Volts 120, UL Listed Yes, Length ft. 10, CSA CSA compliant, Withstands Temperatures F -10F/-23C, Diameter in. 4, Compatible With Copper, metal, poly pipe. Rapid Ramp technology accelerates initial heat-up time After pipe is heated/thawed, power consumption automatically reduces to prevent freezing"