The Noiseblocker NB-BlackSilentFan XK2 140mmx25mm Ultra Quiet Fan, manufactured by Noiseblocker, Germany's quietest fan manufacturer, the BlackSilentFan series features extraordinary life spans and near silent operation. Using the NB-Longlife advanced sleeve bearing and matched with the NB-EKA drive, the BlackSilentFan series runs more than double the life of normal sleeve bearings in operates so quietly you'll forget they are running. These fans are silent performance at high value!

FEATURES

Original Noiseblocker Quality
The fan is extremely quiet, reliable and fail safe

Quiet, Long Life Operation
The Blacksilent is designed carefully to not only last for a long time but to remain nearly silent during that entire life

Highest Durability
The ultra quiet and extremely long lasting NB-Longlife advanced sleeve bearing uses modern engineering and materials and is matched with the high quality NB-EKA drive with a wear and loss rate of an unbeatable 0.01%

SPECIFICATIONS

Dimensions: 140x140x25mm
Weight: 135 g
Rated voltage: 5-13V DC
Starting Voltage: <4.5 V DC
Input Power: 1.20 W
Rated speed: 1100 ±10%
Airflow: 50.07 CFM
85 m^3/h
Noise Level: 19.5~21 dB/A
MTBF (25°C): 80,000 hr.
Connection: Standard 4-Pin w/ tachometer signal line