A little lighter than what I thought, but computer monitors aren't exact.  It's worth 5 stars for that price. No instruction sheet, but an 8 year old could figure it out. Tool supplied is a small allen wrench. Lucky I had another tool that made it a 20 minute assembly; probably 40 minutes with the small wrench.  Website pic shows top and bottom grains running 90 degrees to each other, but I had no problem running them the same direction; just don't tighten all the screws until you line it up. And, assemble upside down is easiest. Then all that's left is to cut up and dispose of a mountain of packaging; no complaints since it was packed very securely.  Thumbs up all the way around!