Dormakaba Door Lock Nightlatch
NL550SSS

Nightlatch is a lock commonly found on home front doors they are mounted to doors that open inwards and mounted to the inner surface of the door.  When the door is closed the night latch automatically latches the door shut.

Nightlatch Function - is lock that is fitted on the surface of a door; it is operated from the exterior side of the door by a key and from the interior (i.e. "secure") side of the door by a knob.

• Dormakaba NL550 is making it ideal for a range of commercial applications including utility and service cupboards.

Features:

• Supplied less cylinder
• Successfully tested up to 2 hours (depending on type of doorset) on fire door assemblies in accordance with Australian Standard AS 1905.1- 2005, Part 1: Fire Resistant Doorsets
• 12 mm stainless steel latch bolt, lock case and striker plates
• Supplied with striker plates to suit standard open in and open out doors
• Lock handing can be easily changed in seconds
• High quality brushed stainless steel finish with welded joints on lock case and striker
  Compatible to most restricted keying systems

Specifications:

• Backset: 60mm 
• Door Thickness: 35mm to 46 mm
• Fire rated: Yes
• Length: 95
• Width: 68mm
• Depth: 22 mm
• Compatible With Most Restricted Keying Systems:Yes
• Has Knob On Inside: No
• Internal Snib: No
• Suits Metal Frame: Yes
• Suits Open Out Door: Yes
• Suits Timber Frame: Yes
• Less Cylinder: Yes
• Finish: Stainless Steel