We ordered two of the steel pergolas for our large aluminum deck which faces the west.  They were pretty easy to assemble and appear to be made of quality materials.  My only complaints are that we were short a few washers, and one of the fabric shades covers is around 6” shorter on each side than the other.  After attaching roll up shades in a few places to protect from the evening sun, our deck is now useable all day long.  It has become an oasis and my favorite place to hang out.