The NF-A4x20 is a highly optimised, quiet 40x20-mm fan in premium quality that uses forward-looking aerodynamic design measures such as Flow Acceleration Channels and Noctua's AAO frame system.
The FLX version offers 3 speed settings (5000/4400/3700 rpm) via the supplied low-noise adapters, providing full flexibility between the maximum flow rate and almost silent operation. Its outstanding smoothness, the SSO2 industry benchmark bearing and Noctua's proven premium quality make the NF-A4x20 a great choice for even the most demanding applications.
40x20-mm format
Compared to Noctua's award-winning NF-A4x10, the NF-A4x20 is twice as deep. This enables a higher pressure output and makes the NF-A4x20 the perfect choice for applications with higher air resistance.
