We purchased our steel pergola online. The 3 boxes were heavy and we are in our mid seventies so we hired someone to assemble it for us. It went together well. Our backyard is so much more useable now that we have some sun protection. And, it looks great!  We have friends over for a meal more often now because we can eat outside under our pergola. We have received many compliments on it.  So glad we purchased this.