Missing roller replacement
Hello! We carry a fairly wide variety of both window and sliding glass door rollers, so there are good odds that we sell the parts you need. However it's not possible to ID them without using the old hardware as a reference.
You said that you're missing a large amount of rollers, but do you have at least one good example of each? We need to see a clear shot of them fully removed and shown without obstruction, from multiple angles. I will also need precise, written dimensions.
That's the only way we can identify a match for you. If you have absolutely no rollers on hand to use as a reference, then we unfortunately won't be able to help you with this project.