Government Tender Published for Supply of air bellow duct set, Each set of air bellow ducts consisting of : 01 no of supply air bellow duct, 02 nos. of fresh air bellow ducts & 2 nos return air bellow ducts .The bellow ducts should be made of meta aramid/para aramid fabric with silicon rubber coating on both sides and the Metallic frames at both ends of the ducts i.e. RMPU side & coach shell side, shall be as per RDSO Specification No. RDSO/PE/SPEC/AC/0197-2020 (Rev.-0) & RDSO drawing No. RDSO/PE/SK/AC/0069-2004 (Rev.3) or latest, Suitable for use in LHB RMPU type AC RMPU. in Rajasthan