Supply Of Return Air Filterreturn Air Filter,Return Air Filter Size-670Mm X 135Mm X 10Mm As Per Rdso/Pe/Spec/Ac055 Rev.2, With Filter Media Compliance To En45545 Hl (1-3) Suitable To Be Installed In Cab Ac Of Vande Bharat (Train- 18) Express, Make- Usha Filters Or Similar. [ Warranty Period: 30 Months After The Date Of Delivery ] ]