Noiseblocker NB-Multiframe M8-S1 80mm x 25mm Ultra Silent Fan - 1200 RPM - 6 dBA Dimensions: 80 x 80 x 25 mm, Speed: 1200 RPM, Max Airflow: 17.66 CFM (30 m3/h), Noise Level: 6dBA Bearing: NB-NanoSLI bearing, Connector: 3pin, MTBF at 25C: 180,000 hours Designed in Germany Unique multi-part high-tech chassis with integrated body mufflers and glass fiber frame 6 year manufacturer warranty