Good finishes also for this fan that I use as an adjunct in Fractal Design Define R4 case. Comes standard with 2 fans like this, I added a 2nd front. Connected to the voltage regulator, they work in perfect silence 5V they start without problems, remain extremely discreet in 7V and 12V are more audible without ever making a disturbing noise (that is the 140mm, so no noise strident). Good ventilation capacity even at low speeds. Only drawback: it is not the PWM. Great product! A bit expensive anyway.
