supply of brushless dc railway carriage fanbrushless dc railway carriage fan,brushless dc railway carriage fan 225 mm sweep 110v dc bracket type complete as per r dso specification no. rdso/pe/spec/tl/0021-2005 rev.3 with amendment no. 1 with frp blade and cras h worth guard. the guard shall be conforming to drg. no. icf/sk-7-6-158 coi-ii alt.g (ms) and complete fa n will be silver ash colour. [ warranty period: 30 months after the date of delivery ] ] , brushless dc (bldc) sensorless railway carriage fan 400 mm sweep 110 v dc swi velling type ms stand and ms gumble ring as per is:6680-1992,& conforming to rdso specifica tion no: rdso/pe/spec/tl0021-2005 rev.3 with amendment no:1, the frp blade shall be as per d rg.no rdso/pe/sk/tl/0108-2008(alt-1).the guard shall be conforming to drg no : icf/sk-7-6-158 coll-ii alt.g(ms). [ warranty period: 30 months after the date of delivery ] ]