The instructions suggested it would take 30 minutes. It took well over. They did get it right that it was a job for at least two people. There were several pieces that we ended up needing to take off and flip, so the connecting hole would align correctly.  The desk boards seem to not fit in quite right and one of the pieces appears to have a defect in that we could not get the screw to fit, even though the other side worked just fine. It is for one or the railing pieces, also connecting the cross supports.  Havent  had anyone try it out yet.