Abstract: A molding, baseboard or the like for accommodating equipment such as electrical equipment and, in this case, electrical wiring for such electrical equipment, comprises a generally U-shape main part having a back and two side flanges and a separate cover adapted to extend between the free edges of the flanges. At least one longitudinal rib projects from the back of this main part for selective attachment of accessories thereto. At least one removable partition for optional use has a foot adapted to be attached to the rib or one of the ribs and there is also provided at least one set of at least two part-covers for use when one or more partitions are used. Each part-cover is adapted to extend between one side flange of the main part and the removable partition when one partition is used or between two removable partitions when two or more are used. The side flanges each comprise a snap-fastener member adapted to cooperate with a complementary snap-fastener member on the cover or part-cover.