The Phoenix Contact ZBF 6,QR:FORTL.ZAHLEN 11-20 marker strip is a crucial accessory for terminal block organization and identification. This marker strip is specifically designed for use with ZBF 6 terminal blocks, providing a clear and durable labeling solution. The strip is vertically labeled with consecutive numbers from 11 to 20, making it easy to identify and manage individual connections. Manufactured in Germany, this marker strip ensures high quality and reliability for various industrial applications, including electrical panels, control systems, and automation equipment. Its white color provides excellent contrast for easy readability.