A whole bed frame, including headboard, footboard, bed base, bed sides and mid beam. No need a box, just put a mattress on it.
Headboard, footboard made of hard wood, bed sides made of high load-bearing plank, bed base and mid beam made of fir wood.
Adjustable bed sides allow you to use mattress of different thicknesses.
Excellent bed, regular marketing price almost $1000.