89 Deadlocking standard nightlatch

Specifications:

• Backset  60mm
• Inside handle can be deadlocked by reverse turn of key in outside cylinder after losing the door
• Snib function enables the latch to be held back
• Deadlocked by the snib button internally, making the lock inoperable by key or handle
• High security anti-bump cylinder

Features:

• Suitable for both left and right handed,
• For inward opening doors up to 57mm thick.