I usually don’t write bad review but I am making an execution on this. I received this today, was able to get it together.  Highly disappointed on the cover that came with it.   This has an open case with a pull string. so you can’t even get a snug fit on it.   So when it is on your bed it fits loose.  Never have I ever seen a box spring like this, usually they are full encasement.   If you want a box spring with a full encasement, this is not it.   I will have to see if the box spring holds up