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| Door chain
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Locking device where one end of the chain is attached to the doorjamb or the wall with the other end sliding into a holder on the door. This type of lock allows the door to be opened slightly without being unlocked. |
| Door check
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Device that slows the closing of a door. |
| Door chimes
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Doorbell, which makes the sound of, chimes ringing when it is used. |
| Door closer
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Device that automatically pulls a door, closed at an adjustable speed. Door closers can be single acting, double acting, overhead or floor. |
| Door frame
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Structure around the door opening where the door is hung. |
| Door hardware
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Hardware consists of knobs, which are used to open a door and latches, and hinges which allow the door to be opened and closed. |
| Door header
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Uppermost horizontal doorframe member. |
| Door jack
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A mechanism made of boards, which hold the door erect when it is being worked on before installation. |
| Door jamb
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Framework surrounding a door opening. Also called a doorpost. |
| Door knob
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Handle that is used to open or close a door. |
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