It went together very well and quick.  Very pleased with the integrity of the cover and shelves. Just wish there were more clamps for the shelves. There are only two clamps per shelf when in fact there should be 4 per shelf. Living in the Midlands of South Carolina some of our evenings have been cool to down right cold in the 20's. So that being said, I have installed one 250 watt heat lamp and have it mounted on the top rod in  the front facing down and towards the back. I have a smart plug that I can set the lamp to come on from my phone. I got this to house my sensitive plants until my new 12' x 36' greenhouse gets built. It is working out quite nicely. I recommend this particular greenhouse.