Mattresses aren’t the only important part of your bed; you also need the right foundation. Foundation provides perfect weight distribution and surface-area support in a single rugged package. The sturdy framework of cross beams and support beams is constructed with rock-solid Grade-2 SPF (spruce-pine-fir) wood, complemented by the exclusive Ever Edge® feature for complete, consistent support. The soft fiber panel and dust cover are protected from tears by and a durable fabric layer and corner guards, making it a great foundation for your bed. The queen box springs are the most popular size, but comes in all standard sizes to accommodate spring, memory foam, latex, or all-natural mattresses, with 5” low-profile and 9” standard-height options available.