Abstract: Partition frame elements, comprising base elements each of which being made through the process of extrusion and comprising an elongated flat base wall, two vertical side walls, a transverse rib spaced from said base wall, a tenon and a plurality of projecting strips longitudinally disposed on said transverse rib; and cover elements each of which comprising an elongated flat wall with an opening thereon, and two vertical side walls. By inserting the tenon of one base element into the groove between two projecting strips on another base element, two base elements are connected together and secured in place by two cover elements at two opposite ends.