We couldn't be more happier with our Steel Pergola.  We decided to upgrade to steel due to the hot summers here in Texas and the zero maintenance.  Assembly was very straight forward and was easy to follow with the instructions provided on the BILT app. You will definitely need 2 people for this job and possibly a 3rd when your ready to attach the top beams to the posts. Very sturdy and well made. The electrical box is a great plus as well. We are extremely happy with our pergola and look forward to enjoying it for years to come.