Abstract: A frame system for displaying panels such as signs, artwork, photographs, text etc., on a surface such as a wall. Two long tracks have fasteners for fastening them to a surface. Two corresponding cover bars are shaped to slide longitudinally over the tracks while being retained on the tracks. The cover bars have lengthwise grooves for supporting edges of one or more panels between opposite cover bars while allowing the panels to slide along the grooves. Caps are fastened over the ends of the cover bars with removable, tamper resistant, fasteners to prevent the cover bars from being slid out of the tracks until the caps are removed. The system may be mounted on a surface with the tracks horizontal, vertical or any angle in between. While the tracks will ordinarily be mounted parallel to each other, they may be mounted at angles to each other to accommodate panels of shapes other than rectangular.