Mortise Lock, 1-Point, Milgard Patio Door

Part Number: 15135
Price: $37.44
Single Point Mortise Replacement Lock for vinyl sliding patio glass doors. 

Designed by Milgard for their Style Line Series. 

Screw Hole Spacing- 1-11/16",
Back Set-3/4"  

Made in New Zealand.

Priced and sold as each.

Strike Plate - 15134
This product is similar to or the same as the following part numbers in these brands:
Strybuc Industries: 16-490