About the siemens rakes windows (hereinafter I will refer it as SRW :-
1. Fiber glass is used in SRW instead of silica glass which gives following benifit,
- The fiber glass is light compare to silica glass which helps to reduce the weight of the coach.
2. It is easy to operate SRW.
3....
more... The another major benifit is that the light condition in SRW is very good as the portion above the window is also covered by the fiber glass from which more light can come in the coach.
4. The portion above the SRW has a space for vantilation so that even if the window is closed, the fresh air can come in the coach.
5. Very less water leakage in case of rain compare to other windows.
6. Many times, hand injured due to sudden fall of the window, but this doesn't happen in SRW.