Different Types of Door Locks Different Types of Door Locks

For homeowners on the hunt for the best lock to protect their home, the following breakdown will certainly come in handy.

Entry Lockset

  • Two doorknobs that can be locked from both the inside and the outside.
  • One type locks from the inside by turning or depressing a small button, while a key must unlock the outside knob.
  • Some models must be locked with a key on both the inside and outside.
  • In other models, only the inside knob can lock or unlock both sides of the set.
  • A medium security entrance-door lock.
  • A quality feature on entry locksets is a deadlatch.

Deadbolt Lock

  • Provides maximum security on a door.
  • Called “dead” because there are no springs to operate the bolt. It is only operated manually with a key or a thumb turn from the inside.
  • The bolt locks the door to the frame and helps prevent someone from prying the door open.
  • The throw is the length the bolt is extended from the lock housing. The industry standard is a 1” throw.
  • Locks are designed to fit specific size holes and backsets. Backset refers to the distance between the edge of the door and the center of the handle.
  • A single-cylinder deadbolt is operated with a key from the outside and with a turn button on the inside. It is used mostly with solid metal or wood doors.
  • A double-cylinder deadbolt is operated with a key on both the inside and outside. It is best used on a door with glass in or around them as the style prevents someone from breaking the glass, reaching in and unlocking the door.
  • Double-cylinder deadbolts can pose a danger during an emergency. If the key is missing or not readily available, people could be trapped inside a locked house. In some areas, codes may not permit this style of deadbolt.

Surface-Mounted Deadbolt

  • Squarish in shape and mounted on the surface of the inside of the door.
  • The bolt may be turned with a key or a turn knob.
  • Instead of sliding into the door frame, the bolt slides into a surface-mounted strike.

Mortise Lock

  • Consists of a flat, rectangular box that fits into a recess in the door from its edge. Also includes two faceplates that include the knobs and keyholes.
  • Available in right- or left-handed styles.
  • Has a pin tumbler locking mechanism in a cylinder.
  • Latch operates from either side except when the outside knob is locked.
  • Deadbolt operates by a turn of the inside knob.
  • A key from the outside operates both the deadbolt and latchbolt.
  • Used on many types of doors, from heavy entrance doors to apartment buildings and residential doors.

Night Latch

  • Installed on the inside surface of the door.
  • Has an automatic locking feature. The large, spring loaded latch automatically locks whenever the door is closed.
  • For light security and usually used in combination with another lock.

Passage Lockset

  • An interior lockset used inside the home in hallways or closets between rooms where privacy is not important.
  • Has two, non-locking knobs, one on each side of the door. Some models use levers instead of knobs.
  • Available in a wide variety of styles and finishes.

Privacy Lockset

  • An interior lockset.
  • Designed for privacy rather than for security
  • Has a locking button on the inside knob but no key device on the outside knob.
  • Can be either a knob or a lever.
  • In an emergency, the lock can be opened from the outside by inserting a narrow object through the small hole in the outside knob and either depressing or turning the locking mechanism inside, depending on the type of lock. "
  • Available in a wide variety of styles and finishes.

Handleset

  • Usually an entry set that combines a lockset with a deadbolt, the deadbolt is located just above the knob or handle. Can be a one- or two-piece unit.
  • Available with both single- and double-cylinder deadbolts. Styles of locksets also will vary widely.
  • Available in a variety of styles and finishes

Keyless Entry System

  • For advanced home security and convenience
  • Audio and visual indicators confirm the lockset is activated.
  • Audio and visual indicators confirm the lockset is activated.
  • Some models will sound an alarm after the incorrect code has been entered more than three consecutive times.
  • Anti-theft rolling code feature ensures the same code is never used twice.
  • Some systems are compatible with some garage door openers so the homeowner only needs one remote.

Dummy Knob

  • Used only for decoration or applications that do not need a latch
  • Has no latching mechanism and does not turn.
  • Available in a wide variety of styles and finishes.

Courtesy of NRHA.org

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