Feature: 15 sqft Under Tile Heating Mat with ADHESIVE BACKING - Lays Flat and Stays Flat, no need to staple Mat size: 20" wide x 9.1ft long. Voltage: 120V, Amps: 1.5A, Watts: 180W. Zero EMF. Heating cable is only 1/8" thick. Single armored cold lead: 10ft. Cable spacing: 3". System output: 12W/sqft (41 BTU/sqft) HeatTech Electric Radiant Floor Heating System is perfect for: New construction and retrofits; Residential homes and apartment buildings; Bathrooms, Kitchens, Saunas, Mud Rooms; Ceramic or Porcelain Tile, Stone, Granite and Marble Floors; Laminate, Engineered Wood, Vinyl Floors and many others. .