Noiseblocker NB-BlackSilentPro PL-2 120mm x 25mm Ultra Quiet Fan Manufacturer's P/N: NB-BlackSilentPro PL-2. Size: 120mm x 120mm x 25mm Weight: 120g, Color: Black frame with transparent, glossy Rated Voltage: 12V, Operating Voltage: 4 - 13.8V, Start Voltage: 4.5V, Input Power: 1.92W Speed: 1400 RPM, Static Pressure: 1.269 mm-HO, Maximum Airflow: 56.5 CFM Noise: 20 dBA, MTBF (25 C): 160,000 Hours, Connector : 3-pin