Double Directional C-grid ceiling system is one of the Lay-in suspended ceiling systems being widely used for interior large ceiling panel application. The C-grid system has main runners and shorter cross runners integrated to form a square or rectangular modular ceiling. The system is rigid, stable and dimensionally flexible. It is particularly designed to accommodate full height wall partitions for exhibition halls or commercial buildings. The ceiling panels can be fabricated in various sizes, square in tile form or rectangular shape in plank form, depending on the ceiling layout design. Furthermore, the ceiling panel is fully de-mountable at any position without the use of special tools.