I am looking into changing a standard interior-locking-only sliding door, to one where you can lock it with a key from the outside. (We have several apartment units that needed to be changed in this manner).
From some of the QnA's I've read on this site it seems that you need to know what kind of rollers my doors have? How would I find that out? I'm a bit unfamiliar with it all.
I did take a brief picture of the current door handle if it would help in any way.
Thank you so much and have a great day!
Matthew
