We had recently purchased Casper twin-sized beds for our teens. After some research, we decided to go with the Eila 9" Metal Box Springs instead of the Casper box springs.  The size of the slats are the same, and the Eila was a better price. It took longer to put together than I thought, fidgeting to get the screws lined up into the holes.  I really appreciated that a rachet came with it, along with the Allen wrench, because that made it a lot easier! I also liked that the metal box is covered with fabric, as well as the slats. This adds to the aesthetics as well as functionality! Foam mattresses are expensive and you don't want to have the foam torn by bare wood! The only thing I might change is getting bedframe/rails that are a little more decorative to go with this beautiful box spring. I highly recommend this box spring with a foam mattress!