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A folding door is a type of door which opens by folding back in sections or so-called panels. Folding doors are also known as 'bi-fold doors', in spite of them most often having more than two panels. Folding doors are also known as 'bi-fold doors', in spite of them most often having more than two panels.
Some sliding doors run on a wall-mounted rail, like this one Sliding doors in a modern wardrobe. The 'top-hung' system is most often used. The door is hung by two trolley hangers at the top of the door running in a concealed track; all the weight is taken by the hangers, making the door easier to move.
Sliding partitions (hiki-do, 引戸, literally "sliding door") did not come into use until the tail end of the Heian, and the beginning of the Kamakura period. [99] Early sliding doors were heavy; some were made of solid wood. [100] Initially used in expensive mansions, they eventually came to be used in more ordinary houses as well. [99]
A bifold door is a unit that has several sections, folding in pairs. Wood is the most common material, and doors may also be metal or glass. Bifolds are most commonly made for closets, but may also be used as units between rooms. Bi-fold doors are essentially now doors that let the outside in.
1954 Kaiser Darrin with its sliding pocket door opened. Sliding doors are common on minivans, leisure activity vehicles, light commercial vehicles and minibuses. A few passenger cars have notably also been equipped with sliding doors, such as the Peugeot 1007, the Suzuki Alto Slide Slim, the BMW Z1 and the 1954 Kaiser Darrin. Many concept cars ...
A door operator may be triggered in various ways: Approach Sensor (such as a radar sensor) - the door opens when a user approaches it. Pushbutton - the door opens when a user presses a button. Access control - the door opens when an access control system determines the user is authorized to go through. Automatically (in the case of elevators).
It’s been more than 22 years since 9/11 and more than 12 since Osama bin Laden’s death. But the al-Qaida leader’s open “Letter to America” attempting to justify the Sept. 11, 2001 ...
The doors entering each room are aligned with the doors of the connecting rooms along a single axis, providing a vista through successive rooms. The enfilade may be used as a processional route and is a common arrangement in museums and art galleries, as it facilitates the movement of large numbers of people through a building.