Papst 412FM Silent Case Fan

Need a quiet 40 mm computer fan? Papst is the source of the most comprehensive line of high-quality, truly-silent, quiet computer fans. Small fans can be particularly noisy due to the turbulence issues involved in moving air through a small space. If you are in need of such a small fan, this quiet fan is your silent solution at only 19 dB.
 

Papst 412FM Quiet Computer Fan Specifications
Dimensions	40x40x10 mm
Mass	17 g
Air Flow (m3/h)	6
Air Flow (CFM)	3.5
Nominal Voltage (V DC)	12
Voltage Range (V DC)	10...14
Noise	19 dB(A)
Bearing Type	Sintec-Sleeve Bearing
">Power Input	0.6 Watt
Nominal Speed (min-1)	4300
Temperature Range	-20...+70 C
Service Life L10 at 20C (Hours)	45,000
Service Life L10 at 60C (Hours)	15,000