Supply Of Return Air Filter (Size-788X463x40mm) Required For Rmpu Fitted In Train-18 As Per En45545 Hl2 (1-3) Rdso Spec.Rdso/Pe/Spec/Ac/055 Rev.2 Make- Usha Or Its Equivalent.Return Air Filter (Size-788X463x40mm) Required For Rmpu Fitted In Train-18 As Per En45545 Hl2 (1-3) Rdso Spec.Rdso/Pe/Spec/Ac/055 Rev.2 Make- Usha Or Its Equivalent.,Return Air Filter (Size-788X463x40mm) Required For Rmpu Fitted In Train-18 A S Per En45545 Hl2 (1-3) Rdso Spec.Rdso/Pe/Spec/Ac/055 Rev.2 Make- Usha Or Its Equivalen T. [ Warranty Period: 30 Months After The Date Of Delivery ] ]