The 210-154 is an aluminum carrier rail used as a mounting accessory for terminal blocks. This silver-colored rail measures 1000 mm in length (width), 18 mm in depth, and 7 mm in height, providing a standardized platform for electrical components. Constructed from lightweight yet durable aluminum, it weighs 175 g. It is specifically intended for mounting terminal strips with snap-in feet, making it an essential component for organizing wiring in control cabinets and other industrial applications.