Stops Pipe and Valve Freeze Down to -40°FCable Will Not Burn Out Or Overheat When OverlappedSuitable For Use On Metal and Plastic PipesAvailable in 3W, 5W, 8W or 10W / Linear FootWattage Rating Is Determined @ 40°F16 Gauge Heating Cable Bus WireFlouropolymer Insulation and Rugged PVC JacketcULus Certified for USA and Canada2-year limited warranty.SR Series Self-Regulating Pipe Trace Freeze Protection Heating Cable is designed for a variety of pipe freeze protection applications. It is also suitable for metallic and non-metallic gutters & downspouts.