I crave the day when I come and visit you and your high tunnel, and meet your resident plants. These images resemble the "cold frames" I'm familiar with, and they might be identical to yours, but with a different name. I had the good fortune of co-managing an organic produce farm in Montana, where we put up two of these. So much to say and share about that experience, but just quickly: they work nicely in the summer months too–we opened the sides for ventilation with a long steel rod that could wind up the walls. Somewhere I have some notes that might be useful to you. I was a thorough record-keeper, as was required for our organic certification. Love this. Love you.