Lockwood Selector® 4772 universal mortice lock with 89 mm backset.
The new Selector® 3770 series mortice lock was designed to incorporate a greater range of lock functions into one primary lock. In addition to anti-lockout setting, the Selector® 3770 series also includes an industry first selectable holdback feature.
All handing setting (Passage, Combination or Escape) can be adjusted via the hub selector located under the face plate.
Successfully tested up to 4 hours (depending on type of doorset) on fire door assemblies in accordance with Australian Standard AS 1905.1- 2015, Part 1: Fire Resistant Doorsets.
Holdback must not be activated on fire doors.
For handing see FAQs