Abstract: A strut back for a photo or picture frame comprises a back having at least one slot shaped to define the boundary of a region of flexion and a strut having an integrally formed projecting lip or flange which can be engaged in said slot by flexing of said region such that said lip or flange embraces one edge of the slot and is urged against said edge when said frame is stood in a display position supported by the strut. Both the strut and the back may be moulded from a plastics material and the back may have an overall thickness to accommodate said portion of said lip or flange projecting through said slot.