If the electrical outlet on your house or facility is further than 6' from the heated mats you will need to use an outdoor rated cable extender. This 10-Foot Watertight Cable Extender will provide an additional level of protection against water and moisture than other outdoor rated extension cords.
 
This watertight cable extender was designed with the HeatTrak Walkway and Stair Mats in mind and will only work with HeatTrak products. To ensure a watertight seal, the cable extender has the same patented connectors as the heated walkway and stair mats.
 
Length of Cable Extender: 10 feet
Cable Gauge: 14/3 SJTW
Volts: 120V