Each cable is UL Listed to Canadian Safety.Standards and CSA Certified when used in accordance to instructions. Each Cable consists of tough PVC inner insulation, a continuous ground braid and weather resistant PVC (high-low temperature) outer jacket.Highlights:-Automatic thermostat120 volt, 7 watts per ft."ON"38 F and "OFF" 45 F3-prong plug with ground braidFor metal and all rated plastic pipeCable can only be applied straight along the pipeUse on dry locations onlyNot for undergroundAll pipes should be be insulated to provide maximum freeze protection and to conserve energy consumptionOne year limited warrantyUL & CSA listedBoxed18'';