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2. Crash bar - Wikipedia

   en.wikipedia.org/wiki/Crash_bar

   Crash bar. A crash bar (also known as a panic exit device, panic bar, or bump bar) [1][2] is a type of door opening mechanism which allows users to open a door by pushing a bar. While originally conceived as a way to prevent crowd crushing in an emergency, crash bars are now used as the primary door opening mechanism in many commercial buildings.

3. Door handle - Wikipedia

   en.wikipedia.org/wiki/Door_handle

   A door handle or doorknob is a handle used to open or close a door. Door handles can be found on all types of doors including exterior doors of residential and commercial buildings, internal doors, cupboard doors and vehicle doors. There are many designs of door handle, depending on the appropriate use. A large number of handles, particularly ...

4. Roller shutter - Wikipedia

   en.wikipedia.org/wiki/Roller_shutter

   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 it and lowering it to close.

5. The 7 Best Pull-Up Bars for Home, Tested by Fitness Editors - AOL

   www.aol.com/7-best-home-pull-bars-221900933.html

   Door-, wall-, and ceiling-mounted pull-up bars require less space than free-standing pull-up bars. If you’re building a larger home gym, you probably want a squat or power rack with a pull-up ...

6. Evacuation slide - Wikipedia

   en.wikipedia.org/wiki/Evacuation_slide

   Evacuation slide used in an emergency drill. An evacuation slide is an inflatable slide used to evacuate an aircraft quickly. An escape slide is required on all commercial (passenger carrying) aircraft where the door sill height is such that, in the event of an evacuation, passengers would be unable to step down from the door uninjured (Federal Aviation Administration requires slides on all ...

7. Emergency exit - Wikipedia

   en.wikipedia.org/wiki/Emergency_exit

   Emergency exit. An emergency exit in a building or other structure is a special exit used during emergencies such as fires. The combined use of regular and emergency exits allows for faster evacuation, and emergency exits provide alternative means of evacuation if regular exits are inaccessible. Emergency exits must: