The system is the most distinctive and heavy-duty system for exterior applications. The system has aesthetically appearance, design flexibility and practicality for servicing. One of the remarkable advantages of the system is individual ceiling panel can be dismantled from the front surface for access and maintenance with no special tools required. In other words, the system does not require Access Panels and it provides 100% accessibility to the plenum. The system is sound, structurally rigid and reliable. The system does not require welding of metal sub-frame on site and it has successfully completed Wind Pressure Tests for severe storm conditions. 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.