Brushless Dc Railway Carriage Fan, 110 V Dc, 400 Mm Sweep Fixed Type. Rdso Specn. No. Rdso/Pe/Spec/Tl/0021/2005 (Rev.3), Amndt.1 Specn: Rdso Spcn No. Rdso/Pe/Spec./Tl/0021/20 05 (Rev. 1 ) Or Latest. [ Warranty Period: 30 Months After The Date Of Delivery ] ]