Zinus Jayanna 4 Inch Low Profile BiFold Box Spring / Folding Mattress Foundation / Strong Steel Structure / No Assembly Required, Queen Folding mattress foundation compresses for easy mobility and storage Designed to have the look of a traditional box, but made from sturdy steel for longer-lasting durability No assembly required, simply open the box, slide the foundation out and unfold, it will immediately open to the shape of a box spring 4 inch height is perfect for higher profile mattresses. Queen- 79 x 59.5 x 4 inches. Weight-34.6 pounds Worry free 5 year limited warranty / Box Spring only, Bed frame sold separately