Noiseblocker NB-BlackSilentFan X1 80mmx25mm Ultra Quiet Fan - 1300 RPM - 10 dBA Dimensions: 80 x 80 x 25 mm, Speed: 1300 RPM, Max Airflow: 15 CFM (26 m3/h), Noise Level: 10 dBA Bearing: Long life sleeve bearing, Connector: 3-pin, MTBF at 25C: 80,000 hours Designed in Germany 3 year manufacturer warranty Soft rubber fan screws included for anti-vibration mounting