This pergola was an experience to assemble. The instructions leave a lot to be desired. Also the unit is 10x10, BUT ONLY AT THE TOP. The base measurement from the center of each support to the next is only 97.83", not 10x12' or 120". In my case it worked out, but if you have to fit it over an area consider getting a 12x12, which would have worked fine for me. I also checked the interior dimensions in the description on Wayfair, and they were only of the top not the bottom. I believe that information should be changed. The unit itself, once assembled is beautiful, but you do need two people for assembly, especially if you can't drill into the concrete. The legs must be stable to attach the top units to them!! We did that job by laying them on the lawn, then putting them in concrete blocks, as you can see by the photo. Trying to do it while up is folly, unless you have four people holding up the cross bars while you screw in the bolts!! On YT it shows a guy assembling on the ground, smart! All in all this unit is good for the price, but measure and level, that's the trick. Good Luck and stay safe.
