Product DetailsLian Li"s P28 UNI fans have been designed to offer uncompromising performance, with exceptional airflow and static pressure. The P28 fan triple pack contains a magnetic fan speed controller, that can be attached to any metal surface within your case. This controller features three settings each designed to provide different fan performance. When set to their highest setting, these fans have a maximum speed of 2600RPM, at which they can produce 92CFM of airflow, with a static pressure of 4.79mmH2O. What's more, these fans have been optimised for restricted airflow such as when mounted on a radiator. As such, they remain whisper quiet even when operating at maximum speeds, reaching just 32.1dB(A). To accomplish this outstanding performance, Lian Li has made several innovations in the construction of the P28 UNI fan. This includes utilising liquid-crystal polymer (LCP) for the fan blades, and improvements to the motor design. Furthermore, Lian Li"s P28 fans are ideal for those who want high-performance fans without any RGB lighting. With that said, it is possible to add lighting to these fans with an optional lighting kit (sold separately).