Part Number: S3012
Double Point Mortise Lock For Sliding Patio Doors
current style: direct replacement for old style. And has cylinders in both the top on bottom positions to to be used for multiple different handle set (see pictures)
Backset: 1 inch
Known to have been used on Atrium 332 Sliding Patio Doors and more door brands.
Known Associated Products Sold Separately:
Part Number: S3010 - Offset Latch Handle Set For Sliding Patio Doors
Part Number S3017 - Center Latch Handle Set for Sliding Patio Doors