Don't have keys to this slovk for sliding glass door

Thanks for posting! There are a few options available to you for obtaining new keys for your door. The first option is to replace the entire handle set with the 82-030A Centered Keyed Handle Set. This replacement should be compatible with your existing mortise lock.

Dimensions for 82-030A

The second option would be to use the 82-310 Key Lock to replace the cylinder in your existing handle. Although, you'll need to be sure to compare the dimensions and the design to determine if it would be the right fit for your door.

Alternate view of 82-310

There are video tutorials below with instructions on how to install both the handle and the lock. Both options would come with a compatible set of keys.