If the electrical outlet on your house or facility is further than 6-Feet from your HeatTrak Mats you will need to use an outdoor rated cable extender. This 25-Foot Cable Extender has HeatTrak's patented male and female watertight connectors and will provide an additional level of protection against water and moisture than other outdoor rated extension cords. The Cable Extender was designed exclusively for HeatTrak and will only work with these HeatTrak Products: Residential Walkway Mats, Residential Stair Mats, and 120V Industrial Stair Mats. The Cable Extender is not compatible with Industrial Walkway Mats or 240V Industrial Stair Mats. Multiple Cable Extenders can be connected to create custom length cables. Cable Extender Length: 25-Feet. Cable Gauge: 14/3 SJTW.