tender for return air filter for lhb type ac coaches as per rdso specn.no.rdso/pe/spec/0055-2003 (rev.1) with drg. no.rdso/pe/sk/ac/0073-2004 (rev.0). size: 680 x 415x 115 mm as per drg.no. drg. no.rdso/pe/sk/ac/0073-2004 (rev.0). specn: rdso specn.no.rdso/pe/spec/0055-2003 (rev.1) .
