GlideStream 140 The new Scythe GlideStream 140 series combines the proven "small hub & wide blade" design concept with neat, new ideas: Grooved fan blades contributing to even less air resistance, and mounting holes fitted with rubber inlays in order to minimize unpleasant vibration noise. Another unique characteristic are the 120 mm mounting holes. This series comes in four different rotation speeds (one of them with PWM-function) and so offers a suitable fan for various needs. Dimensions 140 x 140 x 25 mm / 5.51 x 5.51 x 0.98 in Fan Speed 800 rpm 1200 rpm 1600 rpm Noise Level 21.4 dBA 29.5 dBA 36.0 dBA Airflow 49.95 CFM 84.59 CFM 106.0 CFM