Lock Compatible With Andersen pre-reachout universal deadlock for 2 and 3 panel sliding doors.
Used by Adams Rite, Andersen, Weather Shield, and others

The Deadlock is the mechanism which secures the operating panel to the frame.
Universal Deadlock was manufactured on Andersen Gliding Patio Door units from 1968 to 1993.

Deadlock has an adjustment screw will move the latch in and out to allow a snug fit when locking the door.

Works With:
200 Series Perma-Shield Gliding.
400 Series Frenchwood Gliding.

Height: 4-1/2 Inch
Width: 1-1/2 Inch (without faceplate) 1-9/16" (with faceplate)
Offset: 1-1/2 Inch
Screw Center Length: 2-9/16 Inch
Keyway: Vertical
Priced and sold each.

To check the Lock Adjustment
1. Open the door and operate the lock from inside with the thumb turn - it should move smoothly
2. Close the door and lock
- Does the thumb latch still work smoothly ? If Not, the lock or strike may need adjustment

Pre-Reach Out Locks
The older Andersen locks had the adjustment in the face of the lock. When the screw is turned it would move the latch in or out for better adjustment
If the lock thumb latch is hard to turn - extend the latch, if the door has to much movement - retract
Turn clockwise to retract latch
Turn counter-clockwise to extend

Reach Out Locks
Same idea as above, except Andersen moved the adjustment to the Strike plate on door jamb

Some doors may have adjustment on Lock and strike.