Union 3K70 Non British Standard 5 Lever Mortice Sashlock

The Union 3K70 mortice sash lock is a Union C-Series mortice lock and is the sash lock equivalent of the Union 3G110. Originally made by Chubb, you may find these feature the distinctive Chubb mortice lock brand when replacing an old lock.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 locks have a distinctive upright design and feature detainers, rather than levers. While they offer a high level of security they do not meet the requirements of British Standard BS3621:2007.

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. Please refer to the line drawing for details.