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  • 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.
 
 

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