Amazon.com: MAXKOSKO 18Ft. 120V Heating Cable for Pipe Freeze Protection, Self-Regulating Heat Tape for Water Pipes for Metal And Plastic Home Pipes, Energy-Saving Heat Trace Cable Keeps Water Flowing at -40°F. :
Heat Wrap For Pipes | Heat Tape For Pipes | Heat-Line
Raychem 10XL2-ZH Self Regulating Trace Heating Cable (10W/m at 5°C) - Trace Heating UK