Abstract: A shelf holder has a first component which supports the underside of the shelf and a second component which grips the top of the shelf, being tightened by screws. The component slides vertically relative to the component, and has feet which project through vertical openings in a wall-engaging part of the first component, the feet having slots which engage the sides of the openings and provide stability. In order to conceal the mechanism, there is a top cover piece which clips over the top lip and a bottom cover piece in two parts, the first of which lies on top of the support part of the first component and the second of which conceals the bottom portion of the shelf holder.