Bought this greenhouse as it was the perfect size for our space. It’s a case of you get what you pay for. The Perspex windows are covered in a very thin film both sides which you have to removed. Any joining pieces together into panels is nailed not screwed. It went together ok except when we added the centre door panels they didn’t fit and my husband had to take about 3mm off each side. Luckily he has the tools and skill otherwise we’d have been stuck. But hopefully it will serve as for enough years to be more cost effective than the plastic one I seemed to be replacing most years. We still have the pieces to add to fronts at side and are adapting shelving so they can all be removed when seedlings are done and cucumbers need space.