Area coverage is 20 square feet Cable Voltage: 240V Cable length is 78Ft Constructed with oxygen-free copper heating elements for flexibility and durability, the wire installs beneath and warms tile, stone, and laminate flooring. Comes with a 25 year limited warranty Never wake up to cold floors again! Popularly used in large rooms and rooms with complex layouts, WarmWire Series cables provide comfortable heating temperatures to keep your feet warm and toasty. Covering 20 square feet at 3" o.c., the SunTouch 240020WD-BST WarmWire Radiant Floor Heating Wire is an affordable way to add comfort and warmth to your home. Constructed with oxygen-free copper heating elements for flexibility and durability, the wire installs beneath and warms tile, stone, and laminate flooring. This 240 volt unit is designed with high temperature thermoplastic insulation, making it corrosion resistant. In fact, the 240020WD-BST is so durable that it comes with a 25 year limited warranty. Product Features Oxygen-Free Copper Heating Elements Oxygen-free copper heating elements in the heating wire provide flexibility and longevity to your radiant heating system. High Temperature Thermoplastic Insulation The insulation provides long-term corrosion, chemical, and temperature resistance to extend the service life of your radiant heating system. Metal Grounding Jacket A grounding jacket provides added safety should any electrical elements become exposed. Tough Outer Jacket The outer jacket provides added chemical and abrasion resistance. Product Includes 78 feet of WarmWire Cable.