More garden junk
As I have mentioned before my husband salvage junk Mainly metal junk for recycling (To sell at Salvage yards) He always comes home with something I want to keep for my projects. The material on this greenhouse is a heavy nylon of some sort. and I think it came from some factory that filters water. They were over large rectangle fiberglass panels about 3 foot by six foot. by 1/4 inch thick like a pillow case would be over a pillow. I took them off cut them open then sewed them to fit the pipe frame. ( The rectangle panels I use for quick fences for my chickens)
The opening is a long velcro strip on the green house end. I'll try and get the other pic on later. All it takes for making something useful from junk is just thinking out of the box.