Interesting that you say that.
I used to have a metal-frame, shelving greenhouse with a plastic cover. After many years of use, the plastic ended up in the garbage.
I just found a replacement plastic on amazon and was really excited until I found out that “somebody” through out the frame/shelving.
So, now, SOMEBODY has to build me a new shelving greenhouse. The great thing about the metal frame one was that I could set it up in the house, wheel it around, and then take it all outside when the weather got nice!!
Toxins Out, Nature In - body/mind/spirit