Lock Replacement Andersen Sliding Door PS11 6R Oper

Thanks for posting. I recommend that you check out our 82-037 Andersen inside mortise lock and our 82-043 Andersen thumb latch.

I can't guarantee that our hardware will work for this door, but the parts I've suggested are used in many Andersen sliding patio doors and I think they're a great place to start. You will have to carefully compare the specs we show online to your own hardware to see how they match up. If your dad is also looking for an outside key lock, then you should also check out our 82-316.

Hey, Dimitri. Unfortunately, I cannot tell what roller you have based on this picture. If this is an Andersen door, you can start by looking at either our 81-128 or 81-018. The only way to know which you have is to remove yours from the door and compare it to our specs.