I picked up the 132" x 54" canvas yesterday at Simon Liu in Sunset Park Brooklyn. It is a folding canvas, beautifully made. It opened up and bolted together easily.
It is 2" thick with a hanger cleat built into it. When it is folded, it fit into the back of my pick-up truck. It was all shrink wrapped, and traveled well, but I will likely deliver the finished painting in a box truck. It had to be a folding canvas so I can get it in and out of the second floor studio.