The Yale 89 deadlocking nightlatch has an inside handle that can be deadlocked by a reverse turn of the key in the outside cylinder after closing the door. The internal snib can be used to hold back or deadlock the latch thereby making the lock inoperable by key or handle. It is supplied with an anti-bump 1109 cylinder and 2 keys. The Yale 89 deadlocking nightlatch is rated as high security and comes with a 2 year guarantee.
Name Yale 89 Deadlocking Nightlatch SKU YALE-89 Brand Yale Deadlocking External Deadlocking Nightlatch Options Modern Style, Complete With Cylinder Backset 60mm Number Of Keys 2 Handing Reversible Bolt Type Latch Case Height 70mm Case Width 92mm Case Depth 27mm Handle Projection 15mm