The KONE sectional high-speed door uses a patented spiral system and uninterrupted chain-steel cable system driven by an electric drive to open up to six times faster than conventional doors. It has a compact design, requires no torsion springs, and can complete up to 200,000 operating cycles with a maximum opening speed of 1.1 m/s. The door sections run along a spiral-shaped rail and are made of insulated steel panels.