sliding door outside handle

Perhaps I can help! Look at the 82-077 handle set. This has an exterior handle that is recessed into the door. This type of handle has a kind of surface mounted lock. Next take a look at the 82-033 this handle is used with an internal mortise type latch. And lastly if all else fails take a look at the surface mounted replacement locking handle the 82-005. See which one would work best on your door.

Thanks for getting back to me. In this case the 82-005 might be your best option, as it has a hole spacing of 4-15/16". Unfortunately we don't have an exact match for the style of your old handle set. Let me know if you think this could work for you.