DIMENSION 140 x 140 x 25 mm INTERFACE 2510-4 PIN PWM FAN STARTED VOLTAGE 9.0 V FAN RATED VOLTAGE 12 V & 5V RATED CURRENT 12 V - 0.32 A POWER INPUT 12 V - 3.84 W FAN SPEED PWM 500 ~ 2000 R.P.M MAX AIR PRESSURE Standard Fan Blade: 3.17 mm-H2O (one fan) Reverse Fan Blade: 2.73 mm-H2O (one fan) MAX AIR FLOW Standard Fan Blade: 81.6 CFM (one fan) Reverse Fan Blade: 79.3 CFM (one fan) NOISE Standard Fan Blade: 34.5 dB-A (one fan) Reverse Fan Blade: 38.8 dB-A (one fan) BEARING TYPE Hydraulic Bearing LIFE EXPECTATION 40 OTHER Fan Frames x 3 Standard Fan Blade x 3 (Pre-installed) Reverse Fan Blade x 3 Cable x 3