The greenhouse once built is excellent. The parts are well made and fit together perfectly. However the building I found difficult and it took several days. The guide has few words of help and the pictures that are meant to show you how to fit the various pieces are not clear enough. I ended up with lots of plastic pieces that I have no idea where they go and don't seem to have a purpose. The most laborious task was fitting rubber strips to every surface that held the glass. This must have taken several hours and bruised my fingers in the process. In spite of all this I am very happy with the end result!