3G135 - 5 Detainer Mortice Deadlock 'Fortress'



  • For timber door hinged on the left or the right
  • Keys are suitable for use on doors up to 50mm thick
  • Detainer style locks provide a higher number of key combinations than lever locks
  • The key used has a special cranked bitting


  • Force resistant, anti drill, anti-pick and anti-saw security features
  • Available with square forend and striking plate
  • 14mm bolt throw
  • Supplied with a pair of metal key plate escutcheons. finished to match the faceplate
  • Case Size: 73mm
  • Backset:  44mm
  • Case: Silver powder coat
  • Forend: Stainless steel
  • Box Strike Assembly: Painted to match forend
  • Deadbolt: Brass, with hardened steel rollers
  • Keying Groups: Standard differ, to pass or masterkeyable with other 3G135 detainer locks
  • Keys supplied: Standard differ supplied with 3 keys.  For locks to pass or master keyed please specify number of keys required
  • Key Blank Number: B-K679-S, B-3G135-STD (Standard Differ) B-3G135-SK (Servant Key)
  • Cut Key Numbers: B-K679-S B-3G135-STD (Standard Differ) B-3G135-SK (Servant Key) B-3G135-MK (Master Key)
  • Rebate Kit: B-3G110R (13mm, 19mm or 25mm)


  • SC - Satin Chrome finish


  • EN 1634-1 assessed for use on 60 minutes timber fire doors
Ordering Options
5 Detainer Mortice Deadlock
5 Detainer Mortice Deadlock