The delivery of the greenhouse was speedy and courteous. The driver wheeled it to where we wanted it instead of just dropping it wherever. This is the second greenhouse that I am using. My first is a smaller greenhouse but not from TMG Industrial. Therefore, I base my opinions on the similarities and differences of each greenhouse. Obviously, larger size is a plus. My husband and I are seniors and were able to put most of it up together in one day. Our son in law helped us finish the roof sections on the second day. First design flaw- there were many times that the wall panels would not slide into their grooves as there were burrs or excess blobs of plastic that we had to scrape to get a proper fit. For the roof panels, we had to eventually cut a notch in the panel to be able to access the screw holes. Were the panels too long to begin with? We're not sure. Second design flaw- the doors. The panels had to be cut to fit properly to line up the screw holes. Once installed, the doors are hard to latch with the latch. My smaller greenhouse has a proper latch that opens and closes from inside or outside of the greenhouse. This TMG greenhouse has no way to latch the doors from the inside. The slightest breeze has them randomly opening and closing. Finally, we had one brass nut missing on the plastic connector between Side vertical bar #14 and side horizontal bar #7. We hope this doesn't compromise any strength needed to support this area.