Rotatable wall cupboard pull-out element

A cupboard having

• a carcass,
• a shelf, consisting of four side walls, a bottom surface, and an open top, and
• an adjustment mechanism, by means of which the shelf is linearly displaceable on a horizontal axis and is rotatable along the same horizontal axis by 180 degrees to permit access to contents of the shelf from all side walls of the shelf, and
• a revolute joint, about the rotary axis of which the shelf is supported rotatably on the adjustment mechanism,
• characterized in that
• at least one retention mechanism is furnished, which is embodied for reversibly fixing the shelf in a predefined rotary position,
• having a resilient receptacle and a retention element that is reversibly fixable in the receptacle.