At any rate, this super-expensive, polyester, open-weave, mesh-like fabric needed to be made into 2.5 width pleated panels.
I tried four or five ways to sew the widths together; I could not discover a way to sew and eliminate the selvedge. I needed to use a zipper foot because the bumps were too high for a regular foot to sew alongside.
Seeing that grey chain weight through the fabric made me very happy.
3" translucent buckram was folded into the header and secured with fusible webbing, which melted to invisible. The tops are doubled, and the pleating was 2.5" full, meaning 6" in the pleat, 4" in the space. The fabric was too bulky for a three-finger pleat. Under a cornice, the important consideration is pleating for the best drape-ability, and the two-finger pleat achieved that. I had intended to tack the pleats by hand, but it actually was easy enough to tack by machine. The designer called to say the panels look gorgeous!