It's the Corral Bed built for use w/o a box spring. The rails have been raised to a height of 15" and additional supports have been added. Wood slats are laid across these supports upon which rests the mattress.
I like the look of the bed higher off the ground. I imagine it in a cabin or some other sunny setting where you rumble out to the morning without much care for the bed making.
The price is $100 less if you provide your own wood supports.
Size shown is a Queen. Same price for a Double or Full
$100 more for either King size.
$100 less for a twin (if you buy 2 twins I can get this cost down)