can i change fans on radiator?

The Rosewill fans are about 40% lower maximum fan speed and almost 30% less airflow. The Rosewill is listed as a case fan, not radiator fan.
The specs don't list the Air Pressure, which is more important for radiator fans. The ML240 fans are listed as 2.34 mmH2O max air pressure.
Personally, I would not go this way, particularly if you find that the air pressure on the Rosewill is less than the ML240L fans.
I don't think your cooling will be as effective with the Rosewill.
 


 


Indeed. Exactly my point.