Watts 1.33-in x 4-in Orange/Blue 120-Volt Underfloor Heating Mat

The UnderFloor (TM) mat is used to warm existing floors, without requiring replacement of floor coverings or a complex renovation. This 4 FT by 16 IN UnderFloor mat is simply stapled to floor joists. It works under any type of floor covering, including nail-down hardwood and can be used year-round to warm floors in homes and commercial buildings, providing up to 15 degrees F more warmth on most floors and between 6 and 10 degrees F more warmth on carpet. It connects to 120 volt AC power.