The 3688115 is a Ripac ECO Subrack with 1.5mm sheet steel, zinc-plated, passivated. Flanges/horizontal rails are made of extruded aluminium section, clear-chromated. It is based on the system dimensions of IEC 60 297-3/-5. Vibration and shock-tested to: IEC 600-68-2-6 test Fc and IEC 600-68-2-27 test Ea.