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Beijing's regular courtyards are generally located in the east–west alleys and face south. The main gate is located in the southeast corner of the courtyard. [6] In the middle of the courtyard is a spacious courtyard with trees and flowers planted in it, and goldfish are kept in a tank. It is the center of the courtyard layout and a place for ...
Roll shutters on windows. Security roller shutters in a dead mall. A roller shutter, security shutter, coiling door, roller door or sectional overhead door is a specialized type of door or window shutter consisting of multiple horizontal slats, bars, or web systems interconnected through hinges. The mechanism involves lifting the door to open ...
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. Another term is 'concertina' doors, inspired by the musical instrument of the same name.
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 invasions. Door security is used in commercial and government buildings, as well as in residential settings.
Revolving doors can also be used as security devices to restrict entry to a single person at a time if the spacing between the doors is small enough. This is in contrast to a normal door which allows a second person to easily "tailgate" behind an authorized person. Extreme security can require a particular type of bullet-resistant glass.
Image credits: VonYellow To find out how this conversation started in the first place, we reached out to Reddit user Professional_Song419, who invited retail workers to share their "you can't make ...
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