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Lockwood Short Backset Mortice Hook Bolt


Lockwood Synergy® 3541 Short Backset Mortice Hook Bolt

Short backset, swing-bolt deadlocks suitable for narrow stile sliding and swing doors. Positive action deadbolt is hooked to engage and lock into a latching or security strike when the bolt is in the thrown position.  Deadbolt is locked or unlocked by either key, turnknob, escape turn or lever handle.


  • Fabricator primary lock body only.
  • Suits sliding or hinged doors.
  • 28mm sintered stainless steel bolt.
  • 23mm backset.
  • Aluminium fabricator face plate 155mm x 25mm.
  • Chamfered bolt for better self latching.
  • Positive deadlocking action.
  • Can be adapted to suit most function with the addition of appropriate cylinders and turns.
  • Suits hollow stile door sections with 28mm internal width and 58mm maximum external width.
  • Incorporates a 570 oval cylinder (not included).
  • Compatible to most restricted keying systems.
  • Supplied as fabricator pack for aluminium doors, no strike included.
  • Finished in satin chrome.

Brochure/Synergy 3540 Series Mortice Locks Complete.pdf


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