Surprised at how sturdy and well-made this bed is! It comes flat in a larger (flat,tall) box- needed 2 of us to put on dolly and move, but was pretty simple to put together. About 1/2 hour start to finish. The platform has metal supports and a center cross-beam and the wooden slats are affixed at a set distance with a velcro strip. Finished measurements in pictures. Excited to receive mattress!!