Secondary Vertical Damper For Lhb Ac Coaches To Rdso Drg. No. Rdso/Cg/Drg/21046 Alt 3 , Confirming To Rdso Specification No. Rdso-Cg-18005 Rev-2, Amendment 1 Of Oct-25 [ Warran Y Period: 30 Months After The Date Of Delivery ] ]