Structures Highrise HD Bed Frame, 14", Twin XL The platform-style Highrise™ HD bed frame saves money and space by eliminating the need for a box spring. Its heavy-duty design ensures a quiet, solid sleep foundation and folds for convenient transport and storage. Create up to 60 cubic feet of storage space with 13 inches of under-bed clearance. Plus, the anti-skid leg caps prevent the bed frame from shifting and sliding. L : 40.9 - W : 38.4 - H : 4.1 - W : 25.6