Door handle for Andersen 400 slider

Thanks for reaching out to us! The door lock, in the second photo, reminds me of the 82-037 Andersen Reachout Deadbolt Assembly. It is compatible with the 82-043 Andersen Tribeca Thumb Latch Replacement.

To confirm that this is the correct replacement, carefully look over the dimensions.

Alternate view of 82-043