Schluter-DITRA-HEAT-E-K Heating Cables 120 V - DHE HK 64 by Schluter Systems Bring comfort and a touch of luxury to your space with an electric floor heating system! DITRA-HEAT cable is thin, durable, and energy efficient. (Input: 120V, Output: 12.75W/SqFt) Heats 64 square feet (Contains a 213 spool with 10 ft armored power lead) Easily snaps into uncoupling membrane, no clips or fasteners required No self-levelers required to encapsulate heating cables (no need to wait for curing)