Track for sliding door

Thanks for posting. It's a bit tough to tell from this photo, but I think this track has raised rails that rollers with concave edges move along, is that correct? See the diagram below for an end profile comparison. If correct, then I think you can use our 71" 23-272. Now, this track is not as wide overall as yours, but that won't affect functionality so long as the distance between the rails is the same. Please compare and let me know what you think.

Profile view of bottom concave roller track

Thanks! This photo is a huge help. So, your exact track hasn't been made in quite a few years, but I personally find our 23-272 to be an adequate replacement. The design is a little different but it can work with the same kind of wheels. Just note that you may need to adjust the wheels a little more to grant them clearance. 

We also sell this in other sizes if needed, so see our 47" 23-270 and 59" 23-271.