Nice appearance with high quality,Exquisite design with precise craftsmanship.The more perfect design. Optional Accessories for 19" ... cable manager(metal and plastic type)Vertical Cable manager19 key board shelf(350mm,550mm,650mm,730mm)19 sliding shelf (350mm,550mm,650mm,730mm ... duty (350mm,550mm,650mm,730mm)19 fixed shelf (350mm,550mm,650mm,730mm)19 fixed shelf heavy duty (350mm,550mm,650mm,730mm)19 ...