INNOVATIVE BED FOUNDATION: Need support for a California king (Cal king) mattress? Catering to a busy lifestyle, it's an alternative to a standard box spring and the last foundation you'll ever need STURDY METAL CONSTRUCTION: Built to last and designed for durability and longevity, this box spring is constructed of sturdy metal instead of wood. It features a removable fabric cover and rounded corners for added safety UNIQUE SHIPPABLE DESIGN: The perfect alternative to the standard box spring, it is ready to assemble in the comfort of your home. It features a removable fabric cover and rounded corners for added safety DIMENSIONS: 77.63" W x 82.75" D x 10" H. This item is also available in all other sizes, including twin XL ASSEMBLY REQUIRED: Easy-to-follow instructions, hardware and tools included. Two people recommended. All parts, tools and instructions are packed into one compact box that ships straight to your door