Wow, great purchase! We moved into a rented cottage, and our beds could not get up the tiny stair wells. I ordered this for our Super King mattress  which is of course is made up of two European Singles. After lots of research I decided on this. It's perfect, as it can also be used as two singles as well as for the lg. super King mattress. The singles are bolted together. Very easy to put together, which I did on my own, then had help lifting the mattress on. Great height and very solid. The other upside is it will come apart, be taken downstairs and moved to our next house. Very pleased!