Union (ex Chubb) 3G135 Fortress Mortice Deadlock

The Union 3G135 Fortress mortice deadlock is part of the C-Series range of mortice locks. Originally made by Chubb, you may find these feature the distinctive Chubb mortice lock brand when replacing an old lock.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. The 3G135 is the same size as a 3G110 but is higher security as it features a larger number of differs. While both locks 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.