Need help IDng upholstery part

[webthread]

In the attached picture, can anyone tell me how/where to purchase the black plastic strip that I've circled in red in the picture? It is sewn to the center fabric and holds the center foam and fabric in place. if you look at it from the side, it is a U-shape. Does anyone even know what it's called? I've been on a few upholstery sites and can't find a picture of it anywhere. I think I need about 80 or 90 inches of it because I need it for the upper center pieces as well. My wife is recovering the center pieces of the seats for me but I need these pieces to be able to finish the project. Thanks, Jay

[Guest Anonymous]

Seat pan edging