HeatTrak's Snow-Melting Mats melt snow on contact to prevent snow and ice accumulation on walkways and stairs around your home. Made of customized thermoplastic material, the mats are portable and are designed to be left outside all winter long! The HeatTrak mats generate heat to melt snow at a rate of 2" per hour leaving the pathway to your home clean and clear 24/7. The Residential Snow-Melting Walkway Mat and Residential Snow-Melting Stair Mat can be used independently or interconnected with one another to create a continuous system of snow melting mats. With the mats' built in watertight connector cables, you can connect Residential Mats to create your perfect snow melting solution - all on a single plug!