We purchased the queen size to use with a tempurpedic ergo adjustable mattress and frame, and this did the trick! We simply built the frame around it, not using the center pieces (although with a regular mattress and boxspring, they would have worked well.)  Easy to assemble (approx. 20 minutes with two people, could be done on your own), and looks great! Very lightweight, but sturdy. The footboard will sit close to or below the mattress, as pictured, but it is really stunning and looks much more expensive! Great buy!