The retractable Flap Barrier consists of two or more adjacent housings with an acrylic panel to create high-speed pedestrian walkways. More housings may be inserted to increase the number of lanes of access. Retractable Flap Barrier comes with the automatic gates you will find at the stations, office entrances, airports and also in many other places. It is a device for emergency control. This allows an automatic opening of its two wings while people connect with it with the access cards and close down in a minute after that.