Best price mattress dual-use steel bed frame/foundation is a complete support system that replaces the need for the traditional box spring and bed frame. It is constructed with 100% steel to provide maximum support and durability for long-lasting use. You will find that its 12 points of contact from the mattress to the floor adds strength, stability and level support. And, our innovative design allows the dual-use steel bed frame/foundation to be folded for portability. Another feature is the 14 inches of under-bed storage to keep those needed items conveniently stored away. Available in twin (75″ x39″ x 14″), full (75″ x 54″ x 14), queen (80″ x 60″ x 14″), king (80″ x 76″ x 14″), and Cal-king (84″ x 72″ x 14″) sizes. Easy setup – in minutes!