A bed frame or bedstead is the part of a bed used to position the bed base, the flat part which in turn directly supports the mattress(es). The frame may also stop the mattress from sliding sideways, and it may include means of supporting a canopy above. There are several types of Bed Frames found around the globe. They are typically made of wood or metal. A bed frame includes head, foot, and side rails. The majority of double (full) beds and all queen- and king-sized beds necessitate a central support rail, often accompanied by additional feet that extend towards the floor for stability. The concept of a "bed frame" was initially introduced and referred to between 1805 and 1815. This foundational support system not only reinforces the structure of the bed but also ensures its durability and longevity, distributing weight evenly to prevent sagging and enhance overall comfort. Not all beds include frames: see bed base.