Abstract: An apparatus (10) and rail system (80) for installing divider wall panels (100) into ceiling rails, is described. The apparatus includes a base (12) which is adapted to be attached to a forklift truck (200). A frame (22) is rotatably mounted on the base and includes vertical members (24) to which are mounted support channels (50) and a holding channel (54). The channels act together along the sides (100C) of the panel to hold the panel in the apparatus. An end channel (60) is connected to one of the support channels and to the holding channel and is mounted to one end (100B) of the panel. The rail system includes an entry rail (82) comprised of rail segments (84 and 86) with a keyway (88) therebetween and a rail key (95). In use, the panel is mounted in the apparatus which is attached to the forklift truck. The channels are tightened around the panel to hold the panel in the apparatus. The forklift truck then lifts the apparatus and the panel.