Keyed Types
  1. What is keyed alike (KA)?
  2. What is keyed different (KD)?
  3. What is protect-a-lock (PK)?
  4. What is master keyed (MK)?
  5. What is master keyed with protect-a-lock (MPK)?
  6. When should I use a double cylinder deadbolt?

  1. What is keyed alike (KA)?
    Keyed alike means key coded to the same key number. This option provides "same key" convenience and eliminates the needs for multiple keys where numerious locks and acccess is needed.

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  2. What is keyed different (KD)?
    Keyed different means that locks are keyed differently.  Different set of keys are required to unlock each lock.

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  3. What is protect-a-lock (PK)?
    Protect-a-lock featured door lockset allows the contractor's access to the house during construction, repair or sale until such time that the home owner/occupant takes possession of property.  All (PK) featured lockset comes with 2 home owner keys and 1 contractor key per orderUse of the home owner key will permanently lock out the contractor key.

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  4. What is master keyed (MK)?
    In master keyed system, master key can open all locks in the system although each lockset has its own unique key.  Master keyed lockset are ideal for permitting supervisory, contractors or emergency access.  Use of the home owner key will not lock out the master key.

    All master keyed lockset includes 2 home owner keys per lock and 1 master key per order.

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  5. What is master keyed with protect-a-lock (MPK)?
    Master keyed lockset with protect-a-lock featured provides 3 functions:

    • Master key access (1 key / order)
    • Builder / contractor key access (1 key /order)
    • Home owner / occupant key access (2 keys / lock)

    Use of the home owner key will permanently lock out the builder keys while master key will not be locked out.

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  6. When should I use a double cylinder deadbolt?
    Most of the time, single cylinder deadbolt (thumb turn on the inside) is sufficient if there are no glass panes or windows within 40" of the deadbolt lock.  However, if the thumb turn can be reached thru the breaking glass, double cylinder deadbolt is needed.

    Please be aware that double cylinder deadbolt can be a fire hazard.  Be sure to have a key is quickly accessible to anyone who is inside the house with the deadbolt locked.

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