Lock failure on sliding glass door

Thanks for posting. Yes, it sounds like the mortise lock needs to be replaced. It looks like you have the 82-260, but compare to the diagrams below to ensure it matches what you have.

Alternate image for 82-260

Alternate view of 82-260

If your old handle set is intact there's no need to replace it or its respective parts. But if the thumb lever is damaged, see the 82-107. If you wanted an all-new handle set, either the 82-089 or keyed 82-086 should do the job. 

Hello again! I'm happy to help, of course. In answer to your new questions, we offer several shipping options that you can review and select during the checkout process. These will alter the delivery time significantly, including an expedited option.

We unfortunately do not offer a military discount.