Quiet, smooth fan!

Strengths:

-This fan is very quiet and moves a decent amount of air. -Includes silicone adapter plates to change from 120mm to 140mm (Check your case). -Freewheels much, much longer than other fans after computer shutdown. -Adapter plates are screwed into the mounting tabs to extend them out to 140mm size, adapter plates also have silicone on them to reduce vibration

Weaknesses:

120mm to 140mm tabs use the 4 self tapping screws (not really a weakness, you can still use the silicone plug mounts but some may need 4 more screws)

Summary:

Great fan, very quiet, would be even more quiet if you use the included ULNA. Can barely hear it over my stock case fans. (Cooler Master low speed fans)