CTBL10 – Cold tail leads (blue) for EcoFilm Pro Kit.
These are electrical cables that connect the heating film to the thermostat, with a blue lead specifically for the neutral wire. These 1.5mm² x 10m leads are used for making electrical connections to the power supply and are distinct from the heated element, typically featuring one lead for neutral and one for live.
Ecofilm is incredibly easy to lay. But you must have a qualified electrician to sign off that the electrical work has been done correctly and safely.
1.5mm² x 10m Cold Tail Leads (Blue)

              
    