Sliding glass door handle with lock

Hello, thank you for posting,

It appears that the handle uses a centered thumb lever. Please review the 82-030 handle set that has a 3-15/16" installation hole spacing from center to center. If a exterior key lock is needed, see the 82-030A handle set.

If a new mortise lock is needed, please review the dimensions of the 82-239 to see how it compares to your original. Let us know if you have any additional questions!