Spinal Solution 4" Fully Assembled Split Box Spring for Mattress, Queen Wood Made in the USA : Box spring comes split in two to easily pass through narrow hallways & doors : 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 8 inch box spring will give a perfect height for you mattress : Length-79 inches x Width-59 x Height-4 Weighs-22 lbs. Box Dimensions: 79x39x8