Unique supersilent fan made by Airen Technology with Enhanced FDB for silent, steady and reliable operation in attractive red-black design. Elegant retail package, screws and antivibration pads included. Rotation speed optimized for the best silence to performance ratio.Dimension: 50 × 50 × 10 mm Fan Speed: 4000 ± 10% rpm Rated Voltage: 12V DC Bearing: Enhaced FDB Noise Level: 17.8 dB/A CFM: 10.2 Length of cable: 300 mm Package Includes: Metal screws, Rubber pads Connector: 3 pin Package Type: Color Box