supply of set of filter elementsset of filter elements,set of filter elements for elgi make main compressor rr 20070 (oem)of 3 phase memu coa ches consisting of two items quantity one nos. each (1).filter element outer to elgi part no.b0057029400 05 -01 no (2). filter element inner to elgi part no.b005702940006 -01 no [ warranty period: 30 months after the date of delivery ] ] , set of two filter elements suitable for elgi rr 15070 compressor for 3 phase memu coaches 1. filter element inner (elgi part no-070315520) qty -01 nos. 2. filter element outer (elgi part no-070315530) qty -01 nos. [ warranty period: 30 months after the date of delivery ] ]