One Coach Set Of Air Circulating Box For Lwfcwac Coaches Consists Of: 1) C Irculating Air Box, La44310, Alt-A , 2) Circulating Air Box, La44311, Alt-B , 3) Circulating Ai R Box, Lw 44483 Alt-Nil And 4) Circulating Air Box, Lw 44484 Alt-Nil As Per Specn. Icf/Md/Sp Ec-350, Rev-00, With Amd-01 To 04. Please Visit Icf Vendor Portal For Downloading Drawing Https:// Vp.Icf.Gov.In/ Vendtendordetnew.Php Using Key 0725Ixskdvb3542 [ Warranty Period: 30 Months Af Ter The Date Of Delivery ] [Quantity Tolerance (+/-): 5 %Age , Item Category : Normal , Total Po Value Variation Permitt Ed: Max 8 Lacs ] ]