Idealfor installation under tile, stone, marble, and nailed hardwood floors, TempZone Flex Rolls add radiant warmth and comfort to any room. These easy-to-install rolls areC-UL-US Listed and produce 15 watts per square foot, making them thehottest product on the market. The TempZone Flex Rolls feature a low-profile, 1/8", heatingcable affixed to a mesh fabric backing in a serpentine pattern to evenlydistribute heat over the entire floor. Each cut-and-turn roll is 1 6 x 15, providing 22.5 of coverage. The 120 VTempZone Flex Rolls are backed by our unbeatable 25-year No Nonsense Warranty.