I haven’t gotten the mattresses in but it arrived in three boxes like promised, hubs put it together in two hours (he took breaks!) and was very impressed with the slats!  It looks almost like a replica of our joss and main queen size bed frame with storage underneath. The grommets look fine and not cheap like reviewed previously.  The grey is a perfect light grey to add to anything, the trundle rolls out east and I would suggest 8 inch mattresses for both trundle and bed per my measurements.