HeatWeave 12000630HW 120-Volt Floor Warming Mat with 6-Feet by 30-Inch with 15 Square Foot Coverage Energy efficient, in-expensive to operate Dual wire technology reduces electromagnetic fields (EMF) to ultra-low levels Single point power connection makes layout and wiring a snap UL listed and manufactured in the USA with the highest quality of material Open weave construction for easy application of thin-set and mortar