Productivity : Computer controlled CNC machine shortens production time of curved surface ceiling panel and reduces the expenses. Characteristics of Panel Surface : The largest feature of Radians Ceiling Panel is evenness of curved surface panel. Structural stability of the panel and overall quality are obtained by integral calculus to the panel in width of 400~1200mm. Size : Ceiling panel is manufactured in a variety of sizes in accordance with customer’s requirement. In general, the width of panel is 400~1200mm (up to 600~1,800mm max. available), and the length is up to 3,000mm max. Radiation : Radians Ceiling System is illuminated by light source at the upper part of ceiling. Lighting effect can be made by installing fluorescent lamp in closed ceiling and the desired brightness can be adjusted by choosing open ratio to the sky.