Yale 85 & 89 Deadlocking Rim Nightlatches

The latchbolt is withdrawn by knob from inside and key outside. Bolt can be deadlocked or held back by slide button from inside.

A full revolution of the key will deadlock the latchbolt and lock the internal handle (not recommended on emergency exit doors, flats etc)

Latchbolt is easily reversible on site if required (for outward opening doors) 

Mechanism : 5 Pin Cylinder. 
Cylinder Finish : Brass or Satin Chrome 
Case Finish : Dark Metallic Grey (DM), Polished Chrome, Polished Brass
Keys Supplied : 2  
Door Thickness : 32mm - 57mm.
Backset: (Distance from door edge to cylinder centre)
85 model:  40mm
89 model:  60mm

* Keying Options Explained

• Individually keyed (Standard) - locks have own keys (2 keys included per lock)
• Keyed Alike - All locks have same keys (2 keys included per lock)