The Main Measurements You Shall Require:
Width of Case : 85mm
Height of Case : 88mm
Depth of Case : 29mm
Size of Backset : 60mm

Union 1098 Auto Deadlocking Nightlatch is another amazing product from Union. Available in either a Brass or White finish for your preference. This lock will automatically deadlock when your door is closed and can be unlocked using a key in the high standard 5 pin Rim cylinder supplied with this product. If you have any questions regarding this lock please call our customer service team on 0800 316 7178 

Specifications
Supplied with a high quality 5 pin Rim cylinder
Cylinder Finished in either Brass or Satin Chrome
Case Finished in either Brass or White
Supplied with 3 keys
Automatically deadlocks when the door is closed.
Width of Case : 85mm
Height of Case : 88mm
Depth of Case : 29mm
Size of Backset : 60mm
Projection of Handle : 28mm