First the bad news: I ordered two slatted bases and both were dismantled (as described) in a carton. So you lose some time to sort out with the count and the items. Then it can go quickly and after about 30 minutes you make the first slat (preferably using a strong electric screwdriver). Some slats were probably due to production, slightly damaged (deep cracks in the wood surface), but these were resupplied in perfect condition free after a short mail, without objection and in double quick time. Superb customer service and a product that in these facilities and quality in assembled certainly would have been 40-50% more expensive, complete this offer.