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  2. Door security - Wikipedia

    en.wikipedia.org/wiki/Door_security

    Heavy duty products that place plates on either side the door tied together with screws or bolts can be used to prevent delamination. Door chains — allows the doors to be opened slightly to view outside while still remaining locked. Secondary, internal locks — sliding bolts, hooks and speciality latches, metal blocks or bars mounted internally.

  3. Latch - Wikipedia

    en.wikipedia.org/wiki/Latch

    A slam latch uses a spring and is activated by the shutting or slamming of a door. Like all latches, a slam latch is a mechanism to hold a door closed. The slam latch derives its name from its ability to slam doors and drawers shut without damaging the latch. A slam latch is rugged and ideal for industrial, agricultural and construction ...

  4. Door breaching - Wikipedia

    en.wikipedia.org/wiki/Door_breaching

    Attacking the latch and lock is easiest, as it requires fewer shots and is easiest to target, whereas attacking the hinges requires more shots, and the hinges may not be visible from the outside. According to US urban warfare doctrine, the breaching operation is performed with the muzzle in contact with the door, or as close as possible, and ...

  5. Lever tumbler lock - Wikipedia

    en.wikipedia.org/wiki/Lever_tumbler_lock

    Animation of a lever tumbler lock mechanism. A lever tumbler lock is a type of lock that uses a set of levers to prevent the bolt from moving in the lock. [1] In the simplest form of these, lifting the tumbler above a certain height will allow the bolt to slide past.

  6. Night latch - Wikipedia

    en.wikipedia.org/wiki/Night_latch

    A night latch (or night-latch or nightlatch) is a lock that is fitted on the surface of a door; it is operated from the exterior side of the door by a key and from the interior (i.e. "secure") side of the door by a knob. [1] [2] [3]

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