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UNION C-Series 3C10 Euro Deadcase


The Union C-Series (formerly known as Chubb) 3C10 is a heavy duty Euro Profile Cylinder Mortice Deadlock (case only – cylinders supplied separately). It is a robust choice of deadlock, with an extra long deadbolt and it is available with different faceplate finishes to suit other door furniture. It is suitable for use on doors over 40mm thickness and it meets the requirements of EN1634 for use on 60 minute timber fire doors. This lock is so reliable it comes complete with a 15 Year Guarantee for added piece of mind.


  • Two Levers within the case control deadlocking and stop manipulation of mechanism to bypass cylinder
  • With extended box strike for additional strength and an extra long deadbolt has 14mm throw
  • Not suitable for doors under 40mm thick
  • En1634-1 use on 60 min timber fire doors
  • 15 Year Guarantee
  • Formerly known as Chubb

Availability: Out of stock


  • Backset: 44mm
  • Bolt Throw: 14mm
  • Case Finish: Silver
  • Case Height: 123mm
  • Case Depth: 73mm
  • Weight: 950g
  • Finish: Satin Chrome
  • Forend Length: 178mm
  • Forend Width: 25mm
  • Mechanism: Euro Cylinder
  • Pack Quantity: 1
  • Packaging: Boxed
  • Manufacturer Reference: 3C10