The only reason the king bed frame I ordered hasn't completely collapsed is because I added metal corner braces in each of the four corners. Additionally, we had to add 3-4 support braces running diagonally to each center support beam because from day 1 of having our new mattress placed on this bed, the screws intended to hold the center support legs into the center support beam completely stripped and the supports kept collapsing from as little as my 145 lb pregnant frame climbing onto the bed. The only reason I haven't tried to return it is because I don't feel like taking apart and attempting to return ship a product of this size. I'm not sure if other reviewers purchased smaller frames that didn't suffer these issues, but the king size version of this product is not worth the relatively cheaper price tag. Next time I'll just spend more money somewhere else on a product I won't have to retrofit to keep from collapsing.