The invention relates to a frame element for installation in a piece of work furniture or the like, in particular a piece of sanitary furniture, wherein the frame element has an at least U-shaped, in particular rectangular cross section and a defined extension, at least in two dimensions, such that modules can be arranged along at least one of the defined extensions, wherein the plurality of modules have dimensions along the at least one extension which are an integral multiple of the extension of a basic module, and wherein at least one horizontal and/or vertical divider corresponding to the dimensions of the basic module or an integral multiple thereof can be secured, in particular detachably, in the frame element.

A furniture item comprises a first modular component, a second modular component, and third modular component. A first connector assembly is provided for connecting the first modular component with the second modular component. A second connector assembly is provided for connecting the first modular component or the second modular component with the third modular component, the first and second connector assemblies being different.

A furniture system can include a base and a top. The base has a first surface defining a first slot and a second surface defining a second slot. The top has an end that is sized and configured to be inserted in the first slot and in the second slot. The furniture system forms a chair of a first configuration with the top forming a chair back and the first surface forming a first chair seat when the end of the top is inserted in the first slot. The furniture system forms a chair of a second configuration with the top forming the chair back and the second surface forming a second chair seat when the end of the top is inserted in the second slot. The furniture system can also be configured as various types of tables.

A furniture system can include a base and a top. The base has a first surface defining a first slot and a second surface defining a second slot. The top has an end that is sized and configured to be inserted in the first slot and in the second slot. The furniture system forms a chair of a first configuration with the top forming a chair back and the first surface forming a first chair seat when the end of the top is inserted in the first slot. The furniture system forms a chair of a second configuration with the top forming the chair back and the second surface forming a second chair seat when the end of the top is inserted in the second slot. The furniture system can also be configured as various types of tables and the like.

A modular shelving system includes at least two elongate U-shaped members, wherein each of the elongate U-shaped members includes: an elongate body member; and first and second parallel elongate leg members extending transversely in the same direction away from opposing ends of the elongate body member with space between the first and second parallel leg members, wherein the length A of the elongate U-shaped member is equal to twice the height B of the first side of the elongate U-shaped member, plus twice the height C of the second side of the elongate U-shaped member, such that A=2B+2C.