Amazon Basics Smart Box Spring Bed Base, 9" twin XL - $70 (Mason)

Size Twin XL Material Metal Color White Furniture Finish Alloy Steel Style 9-Inch About this item The look and functionality of a traditional box spring, but made from steel to support any spring, memory foam, or hybrid mattress Durable steel frame and horizontal slats provide sturdy, reliable support for any same-size mattress 2-piece fabric top and bottom covers the frame and zips together for full coverage; cover is removable for spot cleaning Easy tool-free assembly; interlocking frame components assemble in minutes Outer frame folds down for compact, convenient shipping to your front door Twin XL size measures 9 x 79 x 38 inches (HxLxW)