Owner

I believe that Bi-Rib is a trade name used by Metal Sales Manufacturing. However, it is also used somewhat generically to refer to any of a number of various manufacturer panels, all of which may have differences in dimensions. I would suggest either contacting the manufacturer of your panels or search online for something like "translucent polycarbonate or fiberglass roof panels" and connect with the various manufacturers to see if they produce a panel that matches your roof.