I will do that, Boywonder, thanks. I've been in a place where "lumberyard" means Home Depot , but as soon as that changes I will check an actual lumberyard. (A good lumberyard is a treasure!)
Sorry for bumping this old thread but I wanted to share that I contacted Sportsmobile about their wall material and they said it's made custom for them and you can pick some up at one of their factories (in case anyone is looking for it like I am).