Abstract: The subject matter of the application is a sink accessory (e.g. a cutting board) that can be placed on a sink and a sink that is provided with a sink accessory of this type. Hereby, the periphery of the sink accessory comprises two differently spaced bearing surfaces which lie at different heights with respect to the surface of the sink accessory. In this way it is possible for one and the same sink accessory to be selectively placed on different supporting surfaces of the same sink, on the supporting surfaces of different sinks or on the supporting surface of another sink accessory (e.g. a strainer). In dependence on the geometry thereby, only the first bearing surface is in contact with the sink in a first position, whereas the second bearing surface is used as a contact area in the second position.

Abstract: Methods to fasten an installation element, in particular a sink, to the edge of a receiving opening for the installation element in a work surface are disclosed, wherein the installation element has at least one holding element, which enables the installation element to be fastened simply and quickly to the work surface. A disclosed method comprises: (a) arranging a variable-volume material on the installation element and/or on the holding element and/or on the work surface and/or between the installation element and the work surface; (b) arranging the installation element in the receiving opening of the work surface; (c) changing the volume of the variable-volume material, so that a clamping body is formed from the variable-volume material, which exerts a resultant force on the holding element of the installation element, which causes the installation element to be pulled towards the work surface.

Abstract: The subject matter of the application is a sink accessory (e.g. a cutting board) that can be placed on a sink and a sink that is provided with a sink accessory of this type. Hereby, the periphery of the sink accessory comprises two differently spaced bearing surfaces which lie at different heights with respect to the surface of the sink accessory. In this way it is possible for one and the same sink accessory to be selectively placed on different supporting surfaces of the same sink, on the supporting surfaces of different sinks or on the supporting surface of another sink accessory (e.g. a strainer). In dependence on the geometry thereby, only the first bearing surface is in contact with the sink in a first position, whereas the second bearing surface is used as a contact area in the second position.

Abstract: In order to produce a built-under sink for mounting on a lower surface of a work top and which comprises a mounting flange that rests against the work top in the installed state of the built-under sink such that it is mountable on the work top in a secure and space-saving manner, it is proposed that the mounting flange be provided with at least one fastener recess for the passage of at least one mechanical fastener through the mounting flange.