Rotary shelf (10) for furniture for sitting or lying down, in particular upholstery furniture such as sofa, bed, chair or a combination thereof, with a seat or deck element which can be adjusted or rotated in a substantially horizontal plane in different positions of use (20),with a fixed base frame or frame fixed to the furniture (6) and with a seat frame adjustable and/or retractable to the base frame (6) or a seating/reclining element which can be coupled to each other by at least two vertical axes (X1, X2) over the rotating frame (10), that the base frame (6) provides corner elements (1) to be attached to at least two opposite corners of the base frame (6) respectively, which can be rotated with hinged hinge classes (2) respectively over the axes (X1, X2), and that the hinge classes (2) have such a length,that they are located or can be mounted on the seat frame (5) in the middle of the side lengths of the seat frame (5).
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