Love this Pergola but I have a few issues. The bars that go through the material at the top are in two pieces when you start. THe issue is that they don't snap together to create a bar that will not detach. One bar goes inside the other and you have to hope that they won't come apart but they do and it is very frustrating. I would recommend gluing or welding them. Also, the poles are hollow which makes them very light so you need to put sand bags on each pole.