Flextherm green cable surface XL. Bought ot use in my steam shower / bathroom and then the wife changed the design. So I can not return it, so I will have to try and sell it. The cable sells for 469.00 contractor price. If you want and amazig system for your heated floor, this is the one to use. Thermostat is available at Golden Flooring. Call me with any questions. Make an offer, want them gone.