AAO Frame
Anti-Stall Knobs
Focused Flow™ Frame
Inner Surface Microstructures
Sterrox® liquid-crystal polymer (LCP)
AAO Frame
Noctua’s AAO (Advanced Acoustic Optimisation) frames feature integrated anti-vibration pads as well as Noctua’s proprietary Stepped Inlet Design and Inner Surface Microstructures, both of which further refine the fan’s performance/noise efficiency.
![AAO Frame](https://noctua.at/pub/media/wysiwyg/images/technologies_new/aao_frame.png)
More information: Stepped Inlet Design
Inner Surface Microstructures
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