Ah, OK. In that case I've seen these in home made form - they are a length of plywood about 1/2" thick and about 8" wide with about four legs on them. They clip onto the existing wooden rail that would normally support the central base of the bed.
Some of the single Bambi club members I've seen use these as they allow the bed to be left made up so saving the chore of making and "un" making the bed
