The hallways of the Severed floor of Lumon Industries are brightly lit and nearly unbroken plain white walls, floors, and ceiling. The width of the hallway depends on the area of the maze that is the Severed floor. It is forbidden to map the halls of this floor, as Kier admonishes his employees to render not his creations in miniature. However, even the most devoted followers of Kier acknowledge the necessity to occasionally craw a map to different departments. In unused parts of the floor, the lights come on only when motion is detected.