[Usage] It can used to assemble any kind of 19 FT networks, communication products and also it can install any kinds of server. [Material] Full frame is formed from quality C.R.S 1.0mm -2.0mm thick. [Surface Management] Black powder color, and phosphate treatment for rust prevention, electrostatic powder spraying. [Construction] It is full assembly and knockdown construction, and seamless bayonet mounting. [Arts and Crafts] Cold mild steel and stainless steel's design make mutual benefit. Primitive colors with stainless steel, wearable, and the black color bring out the best in each other to assume a luxurious style.