supply of retro fitment of roof mounted air conditioning system without trough in both cabsretro fitment of roof mounted air conditioning system without trough in both cabs,retro fitment of roof mounted air conditioning system without trough in both cabs as per r dsos specification no. rdso/2007/el/spec/0055, revision 2 or latest with provision of thermal insulation as per icf str no. icf/md/spec-413 rev.00 and clws drawing no.1209-08.130-145 alteration-2 in both c abs of three phase electric locomotives. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ] sse(m) trs/bia, secr chhattisgarh 97.00 set