B-15/A-30 self supporting Hook-On Ceiling System is designed specially for corridors. Each full sized panel can swing down separately. This gives an unlimited access to above services anywhere without disturbing the fire integrity of the ceiling. No additional insulation is required. The ceiling joint ensures a tight, uniform “pencil” line connection with all panels in flat alignment forming a distinctively plane and neutral ceiling area. Widths of 300 or 600 mm and lengths up to 1435 mm are available.