Truth Nexus lock, Internal Latch, 2-point Double Hook Sliding door mortise lock for wood or vinyl doors.
Double Hook Latch insures greater security. 

Face plate Width: 5/8" (16mm)
Face Plate Length: 9-5/8" ( 244.3mm)
Markings: MZO

Note 1:  This locks comes with 16mm and 20mm faceplates. Standard and Extended adjustment range, Steel or Stainless.
Note 2: Faceplate can be changed using a Torx T-10 bit 
Strike for Truth Nexus Lock: 15342