The invention relates to a piece of furniture comprising releasably arranged parts suitable for assembling other pieces of furniture. In such a piece of furniture a case to be placed on the ground is used, the two side boards of which bear on the floor by their lower edges. These side boards are releasable and may serve as boards bounding the ends of a bedstead after they have been turned through 90° so that the edges placed on the rear side for the case are directed towards the floor. Obviously one of the standing edges of the side boards of the bed has served as a carrying edge for the case so that after a long time of use said edge may be damaged, which becomes visible in building up a bed. This is aesthetically little attractive. The invention provides a piece of furniture which is provided with a chest-like lower case of a given depth and an upper case of smaller depth disposed on the former, the rear walls of said cases mainly extending in the same vertical plane, whilst the front and rear walls of said upper case are releasably mounted and are suitable for use as boundaries of the ends of a bedstead.