replacement handle for a large Simonton patio door

Hello there. I can't be certain, but this looks like it might require a handle set with 3-15/16" hole spacing. If so, something like our 82-030 would work. I would like to see the mortise lock in the door to confirm this. The identity of the mortise lock will tell us for sure if the 82-030 can work for you. 

Perfect, thank you. Yes, this is our 82-244 Mortise Lock, and so the 82-030 should work just fine. Let me know if you have further questions!