supply of railway carriage fan 400 mmrailway carriage fan 400 mm,railway carriage fan 400 mm sweep 110v dc bldc swivelling type and complete with guar d & frp blade conforming to rdso specification no. rdso/pe/spec/tl/0021-2005 rev.3 with amendment no. 1. the frp blade shall be as per drg. no. rdso/pe/sk/tl/0108-2008 (alt.1). the guard shall be confor ming to drg. no. icf/sk-7-6-158 coi-ii alt.g (ms). [ warranty period: 30 months after the date of delivery ] ] , brushless dc railway carriage fan 225 mm sweep 110v dc bracket type complete as per r dso specification no. rdso/pe/spec/tl/00212005 rev.3 with amendment no. 1 with frp blade and crash worth guard. the guard shall be conforming to drg. no. icf/sk-7-6-158 coi-ii alt.g [ warranty period: 30 months after the date of delivery ] ]