This is a really nice frame that you don't need a box spring for.  Instructions were clear and it was easy to put together.  The metal slats are in 2 sets and on Velcro tabs so all you need to do is lay them down and the will stay where you put them but can be easily pulled up to readjust if needed.  There is also 2 slats that had sticky paper you peeled off for the mattress so it won't slide, or at least that is what I am assuming.  All in all, worth the money.