To Be or not to Be? 1

Be quiet silence by excellence! PWM sytem (4 pins) for a possible speed control!
The quality is really to meet you there's no denying it !! even the box is neat. In short this fan is mounted on rubber, the material is rigid is robust and finishing of the highest level! Even 1600/1800 rev / min it gently hear!
After testing many ventilos I realized that was the brand I would choose in the future! Although I must add qqles more.