Filter Frame Assembly (Fly Screen) Consisting Of 2 Items As Follows For Wag9 Locomotives. I) Tm Ventilator As Per Clw Drawing No. 1209.11.235.174 Alt-1 Or Latest. Ii) Machine Roo M Ventilator As Per Clw Drawing No. 1209.11.235.173 Alt-1 Or Latest. ( 01 Set Consisting Of 04 Nos (Tw O Each). ]