Fast-opening flexible doors are ideal for all compartments with frequent rapid passages. The closing panel consists of a special, reinforced PVC tarpaulin that allows opening and closing speeds of up to 1 meter/second. Remotely controlled (by radar, photocell, radio receiver, etc.), they automatically open and close in a few seconds and allow passing through the doors without cold, heat, wind, dust, etc. entering from the outside or passing from one environment to the other.