SR Series Self-Regulating Roof & Gutter De-Icing Heating Cable is designed for commercial and industrial roof & gutter de-icing applications. The cable is constructed so that it will not burn out or overheat when overlapped, and can be used on shingled or metal roofs. Suitable For Metallic and Non-Metallic Gutters & Downspouts. The cable is available in 100 and 250 foot coils and also 500 and 1,000 foot reels. Prevent Ice Damns From Forming On Roof & In Gutters. Suitable For Metallic and Non-Metallic Gutters & Downspouts. Cable Will Not Burn Out Or Overheat When Overlapped. Suitable For Use On Metal and Plastic Pipes. Available in 5W, 8W, 12.1W or 14.8W / Linear Foot. Wattage Rating Is Determined @ 32°F. 16 Gauge Heating Cable Bus Wire. Flouropolymer Insulation and Rugged PVC Jacket. cULus Certified for USA and Canada.