THIS LOCK IS CURRENTLY UNAVAILABLE. Can be replaced with #301059

Papaiz Replacement use the Marks Lockset.
THIN LINE Mortise Lock set - US3
Faceplate 1" x 9-7/16
Screw spacing on lock faceplate: 8-1/4" c-c
Handing can be Reversed.
Keylock is Re-keyable
Kwikset KW-1 keyway standard
Optional Schlage SC1 Keyway

Resources:
How to Install Papaiz Locks
How to Replace Mortise Locks.