Thermonet 150w/m² Underfloor Heating Kit Including Thermostat Width: 500mm Heated width: 430mm Protection Rating: IP68 Max. You won't see it, but you'll feel it Thermonet features 3.5mm TwistedTwin cable, self-adhesive mesh and our low-profile cold tail connection cable. Safe, simple and reliable Thermonet underfloor heating cables have a tough fluoropolymer coating on the outside and internal conductors, a continuous armoured earth sheath and multi-strand twin conductors. The conductors as twisted together to eliminate electromagnetic field (EMF) and neutralise the stress, expansion and contractions of the cable along the entire length; resulting in a more robust longer lasting cable. TwistedTwin cable construction The unique stress-free cable construction creates a longer-lasting heating cable with zero electromagnetic fields (Zero EMF). Full self-adhesive mesh Thermonet is installed wire-side-down which means the heating cable is protected from damage during installation by the hard-wearing mesh layer. Heating cable protection Thermonet is installed wire-side-down which means the heating cable is protected from damage during installation by the hard-wearing mesh layer. Minimal height build-up Utilising innovative extrusion processes provides real ‘lay flat’ technology that makes installing Thermonet easy. The matting system is only 3.5mm thick with a low profile cold tail of only 4mm thick which is typically concealed within the tile adhesive layer.