In these doors, the shutter is hung on the door frame on hinges or bits that are attached to one side of the shutter, so that it swings on a vertical axis. Doors can be single swing, double swing or double acting type.
In single swinging type doors, if a person is standing on the outside of a door and the hinges are at his left, the door is a left-hand door, but if they are at his right it is a right-hand door.
In double swinging doors, the shutters are hinged at opposite sides of an opening. These doors are extensively used at the entrances of buildings. In double acting doors, the shutters are provided with special hinges, which keep the door closed when it is not held open. Doors of this type can be easily pushed in either direction.
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