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| Various accessories for folding doors are following: |
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| Door Handles |
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| Door Fasteners |
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| Door Viewer |
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| Door Closers |
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| Door Bells |
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| Door Frames |
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| Architrave |
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| DOOR HANDLES - |
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| A kind of lever (An object to pull or push with force) found commonly on the outside of a door or swinging main gate to another room. |
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| They are usually placed around 3 feet and 4 inches above the ground. Some handles are made of metal or rarely of plastic. |
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| Door knob: |
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| A door knob is a popular type used for opening and closing a door. In the simplest form, a door knob provides a place to grab so that the door may be pulled towards oneself. |
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| It normally holds the closed door and is attached to the modern doors. |
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| A door knob may also have an inbuilt lock. Though in some cases it is beneficial to have a separate lock. |
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| Crash bar/panic bar: |
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| A spring-loaded bar that is mounted horizontally on the side of a door, opens outward. When pushed upon the bar, the bolt is released. |
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| This device is compulsory where the fire exits. |
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| Many of these doors are one-way, and cannot be opened from the outside. To use this device on a two-way door, another type of handle must be mounted on the opposite side. |
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| DOOR FASTENERS - |
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| Latch : |
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| A door fastening device has no locking function. |
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| Lock : |
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| A device that prevents access by those without a key or combination. |
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| Rim lock: |
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| A lock which is built up to the outer surface of a door. |
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| Bolt: |
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| A metal pipe, usually internal to the door that extends to the jamb(vertical side of a doorway) fastens a door. |
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| They are typically manipulated with a lock on the outside and a lock on the inside. Bolts are generally used for security purposes. |
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| Latchbolt: |
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| A bolt whose surface acts as a base to push the bolt inside while the door is being closed. |
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| By the use of a latch bolt, a door can be closed without operating the handle. |
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| Deadbolt - |
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| Deadbolts usually extend deeper into the frame and are not automatically retractable the way while the latch bolts are. |
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| They are typically manipulated with a lock on the outside and either a lock or a latch on the inside. |
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| Deadbolts are generally used for security purposes on external doors. |
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| Push Plates: |
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| Push plates are properly located to receive the normal hand push. |
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| These are centered 45" from the bottom of the frame. |
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| Crossbar: |
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| A fastener consisting simply of a plank or beam mounted to one side of a door by a set of hooks. |
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| The board can be slid past the frame to block the door. Alternatively, the bar can be a separate piece that is placed into open cleats or hooks, extending across the frame on both sides. |
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| This device is essentially opposite of the crash bar that it effectively makes the door one-way while in us. |
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| Hinge: |
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| A joint that holds two parts together so that one can swing relative to the other. |
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| A component that attaches one edge of a door to the frame while allowing the other edge to swing from it. |
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| One door usually has about three hinges but it can vary. |
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| These are made of stainless steel, aluminum, brass and iron. |
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| Hinges come in a large variety of sizes and weights. |
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There are various hinges such as
Butt hinges, slip hinges, joint hinges, flag hinges, T-hinges, spring hinges, bi-fold screen hinges, latch hinges, concealed hinges, strap hinges and even hinges have anti-microbial coating to control bacteria, mold and mildew |
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| DOOR VIEWER - |
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| Optical device fitted into a hole in front of a door enables observation without opening the door. |
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| Viewer has a curved lens in it to magnify an image on the other side of the door. Viewers have various degrees of vision. |
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| DOOR CLOSER - |
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| These are devices for closing doors or gates automatically after opening. |
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They may be overhead or floor mounted and either exposed or concealed.
There are two general styles of door closers: |
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| Manual and automatic: |
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| A manual door closer will close a door after it has been opened by hand. |
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| An automatic door closer opens the door itself, typically under the control of a push button, motion detector or other device and then closes it as well by detecting whether it is safe to close the door. |
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| DOOR BELLS - |
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| A push button at outer door that gives a ringing or buzzing signal when pushed. |
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| ARCHITRAVE - |
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| It is a decorative molding that outlines a door frame. |
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