If you are serious about your cooling performance, This is one of the best additions you can do to your water cooling system. Machine made to tolerance with a venturi shape (No plain box design) which dramatically increases the efficiency of airflow through your radiator. The unique bolt on design also allows easy mounting to the case using the same mounting bolts. This shroud is made for the Pro-120 Radiator and accepts 1-120mm fan. Comes as a kit with mounting hardware.