Noiseblocker NB-eLoop Series B12-PS Black Edition 120mm PWM Bionic Loop Rotor Fan, 1500rpm, 21 dBA

Subtle black color for extensive design possibilities; PWM Controlled, 4-pin connector 400-1500 RPM Fan speed 21.2 dBA Noise level 58.09 CFM Airflow 120mm x 120mm x 25mm