Noctua Industrial PPC-3000 Series Extreme Performance Chassis Fan, The NF-F12 Industrial PPC is a Revolutionary Upgrade Over its Previous Iteration, Providing Twice as Fast RPM Speeds And Airflow. Conceived for industrial heavy duty applications that require enhanced cooling performance and advanced ingress protection, the NF-F12 industrialPPC (Protected Performance Cooling) is a ruggedised high-speed version of the award-winning retail model. Thanks to the outstanding aerodynamic efficiency of the NF-F12 design and the use of a novel three-phase motor, the industrialPPC version provides superior airflow and pressure capacity while keeping noise levels and power consumption moderate as against comparable high-speed fans. While its fibre-glass reinforced polyamide construction and certified water and dust protection make the NF-F12 industrialPPC suitable for operation in challenging environments, the renowned SSO2 bearing technology guarantees an MTTF of over 150.000hrs. Topped off with Noctua’s trusted reliability and 6 years manufacturer’s warranty, the NF-F12 industrialPPC is an ideal choice for highly demanding applications that require superior flow rates and ultimate dependability. The industrialPPC models are high-speed fans for industrial applications. As such, they are not as quiet as other Noctua fans and less suited for low-noise PC builds. Unless you specifically require the higher speeds and performance of the industrialPPC versions, we recommend using models of our other product lines (chromax if you prefer black fans) instead.