This Twin XL Heavy Duty Steel Metal Platform Bed Frame for your mattress replaces your current metal frame and box spring with a much more user friendly option. Excellent strength and durability, easy to bring home and set up, plus 14" of under bed storage! This affordable mattress support system is 100% steel construction and will conveniently and comfortably support your mattress while providing more than double the storage space found under traditional box springs and frames. Twin XL Heavy Duty Steel Metal Platform Bed Frame Completed mattress support system-Replace old frame & box spring Easy to assemble - in minutes - no tool required Super strong - 100% steel construction 14" High-Storage space Twin XL size 39" x 80" x 14" Dimensions: 13.8 x 13.8 x 22.8 inches Weight: 14lbs. Shipping Weight: 25lbs.