Abstract: The invention provides a paneling system primarily for elevator cabs, utilizing a plurality of decorative panels each of which is provided with a kerf extending into the panel from at least one edge thereof and a rabbet portion cut into a rear surface from the same edge as contains the kerf. A fitment member has a central web portion, a pair of rearmost flanges extending laterally from one end of the web portion and a pair of second flanges extending laterally from the web portion but spaced from the rearmost flanges. One of the second flanges will have tight fit in a kerf of one panel while a corresponding rearmost flange will fit within the rabbet portion of that panel. A second panel can then be registered with the other rearmost and second flanges of the fitment member, joining or interlocking the two panels together. The web portion can have its outer end flush with the outer surfaces of the panels or projecting therebeyond.