I did not know what to call this flexible door.  This is adjacent to the kitchen slide-out and evidently is meant to roll up and extend along with the slide-out. It is coming apart.  We are going to attempt a repair, but a replacement would be so much better.
Any ideas?  We stopped by Colaw RV Salvage, but they had nothing that would work.  They had two burned-out 05 Montereys.
Scary!
One last thought, I'm wondering if it has to move (roll-up) at all?  If not, problem solved.