Spinal Solution 8-Inch Queen Size Assembled Box Spring for Mattress, Sensation Collection Wood : made out of strong traditional wood structure, made of light yet dense lumber which prevents the box to loosen up and crack and keeps the mattress in perfect shape : this box spring is good for all mattresses : Shipped fully assembled and ready to use, open the box and the mattress is ready to use : Very Compact resulting fast and easy shipment : the 4 inch box spring will give a perfect height for you mattress : Length-79 inches x Width-59 x Height-8 Weighs-22 lbs. Box Dimensions: 80x60x8