Trying to identify this sliding door

Thank you for reaching out to us. The information given here doesn't tell us anything about the hardware your door uses. In order to help, we need to see photos of the handle you're looking to replace along with a complete roller assembly removed from the door. We'll do our best to help from there. 

We don't sell this exact handle set but the 82-082 has a similar clamp-style latch. This measures 4-15/16" on the installation hole centers so you'll want to make sure yours is the same. If you wanted keyed access, see the 82-310 which is sold separately and can be adapted to the 82-082's exterior handle. Take a look at the specifications and see if they match what you're searching for. 

Dimensions for 82-082

Close up view of 82-082

I'm happy to help. If you need anything else just let me know!