No Compromise Silence and Performancebe quiet! SilentWings 3 140mm PWM stands for state-of-the-art technology, virtually inaudible operation and superior cooling. It meets all the requirements to be a perfect choice for heat sinks, PC cases and radiators.SilentWings 3 PWM fans are your best choice for any application that requires the ultimate in quiet operation and uncompromised performance.Features:- Virtually inaudible operation at max. 15.5dB(A) - 6-pole fan motor with three phases giving very low power consumption and less vibration- Advanced fluid-dynamic bearing enables super-long life span up to 300,000h - Rubberized fan frame with funnel-shaped air inlets for extremely high air pressure - Seven fan blades with optimized surface structures ensure excellent airflow - Removable anti-vibration mountings reduce transmission of vibrations - PWM controlled fan speed by the motherboard - German product conception, design and quality control - Three years manufacturers warrantySpecification:- Dimensions (L x W x D), (mm): 140 x 140 x 25 - Fan speed @ 12V 100% (rpm): 1,000- Airflow @ 12V (cfm, m3/h): 59.5 / 101.09- Air pressure @ 12V (mm H2O): 1.08- Noise level @ 12V 100% (dB(A)): 15.5