3G114 Non British Standard 5 Lever Mortice Deadlock

The Union 3G114 mortice dead lock is a Union C Series mortice lock, which has been fitted to homes and businesses for decades. Originally made by Chubb, you may find these feature the distinctive Chubb mortice lock brand when replacing an old lock. This product is identical and just features the new Union branding.

These mortice locks do not meet the requirements of British Standard BS3621:2007. Please refer to the 3G114E for locks that comply with British Standards.

In line with a number of other mortice locks, these locks feature a silver lock case but they have unique measurements that identify them from other mortice locks. While the case width features standard 67mm (2.5″) and 79mm (3″) sizes, the backset measures just 40mm on the 67mm width case and 53mm on the 79mm width case. Please refer to the line drawing for details.

Please note that Union have discontinued the original, non British Standard, sash lock version of this lock, the 3K74, but the E3K74 (BS3621 version) is still available.

The deadbolt throws 14mm and features hardened pins to protect against sawing attack.

The deadbolt can be locked and unlocked from either side by use of the key.

This lock is supplied with 2 key hole escutcheons, in a matching finish to the lock for both the internal and external sides of the door. It also comes with a striking box in a grey finish.

Suitable for use on doors up to 54mm thick. The thickness of the door is determined by the length of the keys. If you require this lock to be fitted to a very thick door, we may be able to supply extra long keys. Please contact us for more details.

These locks are not handed and can be used on doors hinged on the left or right, which open inwards or outwards.

Supplied with 2 brass keys as standard. We can cut additional keys for this lock, just select whether you’d prefer genuine or copy key blanks and the quantity required from the associated products on this page.

Should you require more than one lock to work on the same set of keys, these locks can be keyed alike by our inhouse locksmith team. We can typically dispatch the same day (larger quantities may require longer).