5 Detainer Mortice Sashlocks
For high-security applications, the 5 detainer mortice deadlock is a suitable choice, especially for commercial premises. The use of detainers instead of levers creates a greater number of key combinations and their greater weight makes the lock harder to pick. Other security features like drill plates, anti-saw rollers, and fully boxed keeps make this class of lock highly resistant to attack. Models conforming to British Standard BS3621 are preferred by insurers.
The Union (ex Chubb) 3G110 remains the number-one choice amongst 5 detainer mortice deadlocks, and can be supplied with a microswitch for integrating the lock into an alarm system. For secure fire and emergency exits, the Chubb 3R35X 5 detainer mortice escape lock is packed with security features, and can be lever-operated for rapid egress. The Walsall 661 is approved to BS3621. These items are available from easylocks, along with a range of accessories such as detainer sets and matching rebates.