It's a California King Size and includes the bed rails, both box springs, mattress and the sheets....if you want them. She's moving out on the 27 so it has to go between then and the last day of the month.
I warn you there is a spring that sticks out the bottom corner of the mattress, I've got the scars to prove it. It sticks straight out so you're only in danger when walking by it, not when you're on it. And it's only a quarter inch or so, nothing major.