Detail [Usage] It is suitable for any 19FT of light series products. [Material] Full frame is formed from quality C.R.S 0.9mm -1.0mm thick. [Surface Management] Luxury and elegant exterior design using blue and white as background color and phosphate treatment for rust prevention, electrostatic powder spraying. [Construction] It is full assembly and knockdown construction, and packed in one carton. Both top and bottom has lacunose holes for cable come in and out.