<br /> <b>Mainstays Half-Fold Steel Box Spring, Multiple Sizes:</b> <ul> <li>Structure made from durable, heavy-gauge steel for maximum strength</li> <li>Folds in half for convenient transport and storage</li> <li>No assembly required</li> <li>Made from steel; naturally resistant to bed bugs</li> <li>Coverlet adds support and increases breathability of the mattress</li> <li>Twin: open 74&quot; x 38&quot; x 7.5&quot;; folded 38&quot; x 4.17&quot; x 44.13&quot;</li> <li>Full: open 74&quot; x 53&quot; x 7.5&quot;; folded 53&quot; x 4.17&quot; x 44.13&quot;</li> <li>Queen: open 79&quot; x 59.5&quot; x 7.5&quot;; folded 59.5&quot; x 4.17&quot; x 46.61&quot;</li> <li>King (Comes with two): open 79&quot; x 76&quot; x 7.5&quot;; folded 37.75&quot; x 4.17&quot; x 46.61&quot;</li> <li>Weight Capacity: T/F 1,200 lbs; Q/K 2,400 lbs</li> <li>5 year limited warranty</li> <li><a href="https://www.walmart.com/search/?cat_id=4044_103150_102547_539386_927959"> <b>Mattresses </b></a> sold separately. </li> <li><b><a href="https://www.walmart.com/search/?cat_id=4044_103150_102547_539386_96991"> Bed frames </a></b> sold separately. </li> </ul>