A while back I shared a picture of the frame for this little green house. These photos are from a few months back, as well (now there's a lot more green in there, and clutter) I have roll-up sides, with a simple t-connector crank, a bed on the south side and a shelf on the north for seedlings. It's been working great so far, and made it through the worst ice storm we've had in 40 years. So I'd say success.
Hope that made any sense at all