The STRUCTURES HIGHRISE Folding Bed Base eliminates the need for a box spring, creating excellent support with an easier set up, more storage space, and better mobility. More Storage Space. With 13 inches of clearance, this platform style bed base creates up to 45 cubic feet of under bed storage space. Organizing items under the bed can help clear clutter in any bedroom. Reliable Foundation. A strong foundation is essential to getting the most out of your mattress. The heavy-duty steel latticework provides continuous support for traditional and foam mattresses alike with a 1250 pound weight capacity. Foundation comes with a 5 year warranty that covers manufacturer defects. Frame Dimensions. The dimensions listed for this frame match standard mattress sizes. The actual measurements are 1 inch shorter on the top, bottom and both sides. Metal bed frames are designed to be smaller than mattresses for good reason. Having the most thick, stable outer bar of the frame under the mattress, rather than to the side of it, provides the best support. It also conceals the frame so that it doesnΓCÖt interfere with the look and fit of your bedding, and it protects your legs from bumping the frame as you walk by or make the bed.