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A door is a hinged or otherwise movable barrier that allows ingress (entry) into and egress (exit) from an enclosure. The created opening in the wall is a doorway or portal. A door's essential and primary purpose is to provide security by controlling access to the doorway (portal). Conventionally, it is a panel that fits into the doorway of a ...
List of non-standard door designs. The main types of non-standard door designs are: Butterfly – butterfly doors move via hinges along the A-pillar, on an axis not aligned vertically or horizontally to the vehicle or ground. A special type of butterfly door is a single door at the front of the car with the steering wheel attached.
Door security. A metal doorframe with a strike plate built in: in other doors this would be a metal strikeplate in a wooden doorframe. The term door security or door security gate may refer to any of a range of measures used to strengthen doors against door breaching, ram-raiding and lock picking, and prevent crimes such as burglary and home ...
A sliding door is a type of door which opens horizontally by sliding, usually parallel to (and sometimes within) a wall. Sliding doors can be mounted either on top of a track below or be suspended from a track above. Some types slide into a space in the parallel wall in the direction of travel, rather than the door sliding along the outside of ...
An ornate brass door hinge A barrel hinge. A hinge is a mechanical bearing that connects two solid objects, typically allowing only a limited angle of rotation between them. Two objects connected by an ideal hinge rotate relative to each other about a fixed axis of rotation, with all other translations or rotations prevented; thus a hinge has one degree of freedom.
Some Japanese, Korean, Chinese and eastern European countries have railway stations that use rope-type screen doors to lower the cost of installation and to deal with the problem of different train types and distance between the doors. Variable-type platform screen doors. The first-ever full-height variable-type platform screen doors have only ...
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