Mellow's metal bunkie boards are the perfect option for those looking for a slim option and less height than a box spring but the same sturdy mattress support. This bunkie board is made with a sturdy steel frame and slats that will provide the support needed to help your mattress last longer. The bunkie board adds support to bunk beds and daybeds and can also work as a box spring or slat replacement for recessed sit-in platform beds. Full, Queen and King sizes include a line of noise-free foam padding between the center bar and slats. All sizes include non-slip tape on the wooden slats for stability that prevents your mattress from sliding. Enjoy quick and easy assembly with slats that firmly lock into the slots.