The PH-F120SP, 120mm Premium fans from Phanteks is designed with the unique Maelstr�m concept technology. They are specifically designed to overcome high static pressure, blade deflection,and noise challenges. Affordable and durable, the PH-F120SP is a great choice for case/radiator fan upgrades. The UFB Bearing composed by MOSS and SSC Systems creates a longer lifespan and adds stability to the fans. Silence and durability are now possible and a standard with the new PH-F120SP.MVB (Maelstr�m Vortex Booster)The nine blades are positioned in a way that it provides a powerfully controlled airflow. The MVB produces a downdraft vortex allowing air passage through the surface to produce a significantly better performance while keeping the noise level down.UFB bearing (Updraft Floating Balance bearing)Phanteks UFB bearings are composed by MOSS and SSC system. MOSS has an effective fan hub-blade ratio to achieve a dynamic balance, thus floating the axis for minimal air noise. SSC increases the bearing life span to ensure that the fan axis is consistently operating without mechanical noise.Polarity Auto-Restart ProtectionPhanteks unique fan circuit design provides a Fan Polarity Auto-Restart feature. The sensor inside of the fan will constantly send a series of rectangular signals to your PC M/B indicating that the fan is working correctly. The unique restart feature provides optimal support and protection.Specifications:- Dimensions: 120 x 120 x 25 mm (W x H x D)- Holes: 120 x 120 mm- Volume: 24.2 dB (A)- Speed: 1,300 (+/- 250) U / min- Air flow: 92 m / h- Static pressure: 1.29 mm H2O- Voltage: 12 V- Power consumption: 0.96 W / 0.08 A- Life Expectancy: 150,000 hours- Manufacturer Warranty: 5 years- Connector: - 3-pin- Scope of delivery: - PH-F120SP fan - 4x fan screws