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2. Door breaching - Wikipedia

   en.wikipedia.org/wiki/Door_breaching

   Utilizing a breaching tool is unnecessary if the door is unlocked and easy to open. [5] [3] [6] [1] If the door is locked, breachers can attempt to force inward-opening doors with a strong kick. The breacher will aim to hit the door near the locking mechanism, but not kick the doorknob itself as one can easily twist an ankle doing so. [7]

3. Officer's tool - Wikipedia

   en.wikipedia.org/wiki/Officer's_tool

   An officer’s tool (also known as an A-tool, rex tool, or lock puller) is a forcible entry device used by firefighters and other first responders. Officer’s tools are designed to completely remove cylindrical locks from doors without causing major structural damage, allowing for direct access to the internal locking mechanism.

4. Halligan bar - Wikipedia

   en.wikipedia.org/wiki/Halligan_bar

   Another option is to use the Halligan to pry the door off the top hinges. [9] The pick and adze (only when properly used) provide protection to the arms, hands, and body of the holder during forcible entry operation. [10] The pick can be placed into the shackle (or eye) of a padlock or hasp and twisted or pried to break it free.

5. The pig (tool) - Wikipedia

   en.wikipedia.org/wiki/The_Pig_(tool)

   The pig is a specialty firefighting tool used mainly for roof ventilation, forcible entry and wall breaching. [1] Invented by a member of the Austin Fire Department, the tool combines the butt-end of a flat head axe on one side and a pick on the other.

6. K-tool - Wikipedia

   en.wikipedia.org/wiki/K-tool

   The K-tool can be used on most styles of door, although it is often faster to use the irons (combination of an axe and halligan tool) or a hydraulic ram on a solid door. The benefit of a K-tool comes where it is impractical or dangerous to break the door, for example, the large plate-glass doors in front of a commercial building will quickly ...

7. High-speed door - Wikipedia

   en.wikipedia.org/wiki/High-speed_door

   A unique "roll-up" system generally defines a high-speed door from a conventional roller door. The door's main objective is to produce a high opening speed and the guiding system must allow smooth operations with minimal friction. Effortless movement will ensure the longevity of the door's moving parts and operating soundness.

8. Electromagnetic door holder - Wikipedia

   en.wikipedia.org/wiki/Electromagnetic_door_holder

   Wall-mounted electromagnetic door holder securing a door in the open position. An electromagnetic door holder (electromagnetic door holder and release or hold-open device, sometimes informally called a mag hold open or electric doorstop) is a simple electromechanical mechanism which can be used to hold a fire door or security door open until given a signal to release.

9. Kelly tool - Wikipedia

   en.wikipedia.org/wiki/Kelly_tool

   The Kelly tool was intended specifically for opening doors and other barriers. Modern versions often are modified along the lines of the Halligan bar, especially at the chisel end. Originally the chisel blade was flat and straight; more recently it has tended to take on a curved and forked form, similar to the claw of a carpenter's hammer ...