supply of supply of air bellow duct setsupply of air bellow duct set,supply of air bellow duct set, each set of air bellow ducts consisting of: 01 no of supply air bellow duct, 02 no 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 l atest, suitable for use in lhb rmpu type ac rmpu, ( one complete set comprises 01 no supply air bell ow , 02 nos fresh air bellows & 2 nos return air bellows i.e. total 05 nos) . [ warranty period: 30 mon ths after the date of delivery ] ]