Abstract: Elements designed for use in connection with furniture, interior fittings and like details, said elements being adaptable to form in assembled condition a surface coating on existing structures and to constitute by themselves such structures, said elements having a small thickness in relation to their surface area.The elements, at least two of which are to be placed in one of two parallel planes, have projections arranged as spacing means between elements situated in one and the same plane, the interspace created between the elements by said spacing means being so formed that it constitutes an undercut sliding and/or supporting groove intended to coact with a per se known guiding rib in a drawer, a shelf or the like.