I called wayfair before I ordered to make sure we ordered the right kit.  I told them I have a 48 inch opening and wanted a single track bypass barn door hardware.  They told me to order the kit with a 48 inch door and it would come the right size.  I now have 2-48 inch doors and a track that is to long for the area that it is going into.  I also paid more than I needed to if I had gotten 25 inch doors.  Oh well, last time I order from this company.  The kit looks good but not what I needed.