UNION C-Series 3M51 Detainer Clutch Lock


Union C-Series (formerly known as Chubb) 3M50 5 Detainer Clutch Mortice lock


  • Projecting stump on the forend engages into locking plate to prevent door being lifted from the frame in the locked position
  • Suitable for timber sliding doors requiring automatic closing action
  • Suitable for doors up to 50mm thick
  • UK Manufactured with 10 Year Guarantee
  • EN1634-1 use on 60 min timber fire doors
  • Formerly known as Chubb

Out of stock


  • Backset: 43mm
  • Case Height: 144mm
  • Case Depth: 70mm
  • Centres: 56mm
  • Weight: 1.12Kg
  • Finish: Gold
  • Forend Length: 225mm
  • Forend Width: 25mm
  • Guarantee: 10 Year
  • Keys Supplied: 2
  • Pack Quantity: 1
  • Packaging: Boxed
  • Manufacturer Reference: M51