Heavy duty construction metal platform box. Durable, supportive and easy to assemble platform base for your mattress. Simplicity in design, this metal platform box creates an unique sleeping surface. Fully supported with center supports and a sturdy box style frame in black metal finish. Metal slat support system included. Comes in a compact package that can fit down narrow stairways or through narrow hallways. Simply place your mattress on it and take advantage of a restful night's sleep without the need for a box spring.