... 75-2.2KW, according to the size of the door to select the model.two brand for choice, ... people and/or equipment to move quickly through the opening. Our automatic high speed doors keep ... door install seal brush on both side of the door track , make it dustproof, wind resistant ... up automatically. Secondly,at the bottom of our door,there is photoelectric sensors,as you obstruct the infrared ray,it stop ...