Lower part of the bed that is the framework. It holds the mattress and/or the box spring in place while also securing to headboard and footboard. The bed frame is important because this is the Bed's main structure.
A bed frame or bedstead is the part of a bed used to position a mattress or foundation set off of the floor. Bed frames are typically made of wood or metal. A bed frame is made up of head, foot, and side rails. Most double (full) sized beds, along with all queen and king size beds require some type of center support rail, typically also with extra feet extending down to the floor.
Bed frames, also called bed steads, are made of wood or metal. The frame is made up of head, foot, and side rails. For heavy duty or larger frames (such as for queen- and king-sized beds), the bed frame also includes a center support rail. These rails are assembled to create a box for the mattress or mattress/box spring to sit on.
