Stelpro 1140W Twisted-Pair Heating Cable 240V 380 Feet comes with universal snap gauges that are adaptable to many floor surfaces and snap-in. An ultra-durable thermoplastic polymer covers the return conductor and the heating element. This heating cable can cover 101-square-feet when spaced 3 inches apart or 133-square-feet when spaced four inches apart. The heating cable is compatible with an electronic thermostat (not included). This heating cable can be installed without having to return to the thermostat. Its small size and flexibility makes it easy to work with. It reduces 99.9 % of the electromagnetic fields. A 25-year warranty is provided for the heating cable. packaging may vary