The Main Measurements You Shall Require:
Backset: 60mm
Width of Case : 92.5mm
Height of Case : 74mm
Depth of Case : 26mm

Union 1158 Easy Access Roller Nightlatch WEPL can be fitted into a wooden door from 35 to 60mm thick and is supplied with an excellent cylinder to shift the bolt using the key. For any questions regarding this lock please call our customer service team on 0800 316 7178.

Specifications
Case finished in White Enamel
Cylinder is finished in Polished Brass
The Roller bolt variant will prevent accidental lock-out
Bolt can be withdrawn using the key from the outside and handle inside
By using the sliding snib the lock can be withdrawn or held.
Extended, return to door lever turn
There is a Chunky snib with a smooth slide action
There are visual red rubber grips operating surfaces
Can be keyed to differ or can be masterkeyed
To enable easier external access there is a large red key bow cover
Theres one cover supplied with standard differ variant only.

Size of Case : 60mm
Width of Case : 92.5mm
Height of Case : 74mm
Depth of Case : 26mm
Projection of Handle : 50mm
Size of Backset : 60mm

Concealed fixing
Can be fitted into a wooden door 35 to 60mm thick.
Hinged can be hinged onto the left or the right but only opens inwards.
Not compatible on outward opening doors
Can be used in steel and composite doors but there are special fixings required for this