Scythe SY1225HB12SH-P GlideStream 120mm PWM Case Fan 1900 RPM Dimensions: 120 x 120 x 25 mm / 4.72 x 4.72 x 0.98 in Fan Speed: 1900 rpm +/- 10% Noise Level: 36.6 dBA Air Flow: 16.40 - 108.83 CFM Voltage: 12 V Connectors: 4-pin (3 to 4-pin Molex-Adaptor included) Bearing Type: Sleeve Bearing