Better than a Boxspring Full FoundationBehold the newest foundation of comfort. This mattress riser is an all in one support system that takes the place of an ordinary bed frame and box spring. The metal unit sets up quickly and without using any tools, creates a sleep haven with unwavering support. Included brackets attach the riser to a headboard. Even better: the clearance from frame to floor is incredibly spacious and ideal for under bed storage. Dimensions: 54. 88" W x 74. 13" D x 14"