Ignore the instructions on how to assemble, as they aren't in an order that actually works. After much trying and failing, we took the main frame apart and started again, going in the order we thought best (outer frame, bed head and foot, then middle support bar, then side supports and finally slats), which worked better than the order suggested in the accompanying leaflet. Assembly aside, the frame is sturdy and has massively improved the feel of our mattresses, meaning it's life will be extended a few more years. We love this bed.