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Union C-Series - 5 Lever Deadlock (UN 3G115)

From £60.45 excl. VAT

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A very nice quality mortice deadlock, for use when a British standard, insurance graded lock isn’t required.

Please note; this is a 5 Lever lock, not a BS3621 insurance graded lock

These locks used to be sold as Chubb locks, but are now manufactured under the name Union C-Series. This is because Assa Abloy (the owners of the Chubb, Yale and Union brands) no longer produce any locks under the Chubb name. They are the same locks, made by the same people in the same factories and so will fit as an exact replacement for the old Chubb 3G115 range.

Please remember to check the “backset” size when ordering. This is the distance from the edge of the door to the centre of the keyway.

If you are purchasing this lock to replace another, please be aware that this lock only has the same backset as the Chubb 3G and Union C-Series range of locks. This is slightly different to most other ranges of mortice locks.




Case Size




67 x 77mm    

133 x 25mm



79 x 77mm

133 x 25mm

Set Items

Each Deadlock Set Contains:
1 x 5 Lever Deadlock
1 x Strike Plate (Frame Side)
1 x Cover Plate for Lock
2 x Escutcheons
2 x Keys
Fixing Screws

Lead Times & Delivery

Please note, we usually have these deadlocks dispatched within three working days.
If you would like to check stock levels before ordering, please mail us at the email address below.

We are happy to export orders outside of the UK. Please mail us at the email address below and we will send you a quote with estimated lead time: