The Simple Life Folding Foundation is a heavy-duty steel foundation that supports your mattress and prevents it from sagging. This Foundation is shipped fully assembled but uses a unique design that allows it to be folded flat. This will save you money on shipping while making it easy to move up stairs and through narrow hallways. Don"t waste hours assembling flimsy wooden foundations that will give you splinters. The Simple Life Foundation takes seconds to set up. Just remove it from the box, unfold and its ready to be used. The heavy-duty steel provides maximum durability and total support for your mattress. This foundation works with any mattress and will replace your old box springs. The Simple Life Folding Foundation is approximately 8" Inch in height. Comes finished in a white soft knit cover.