MASSCOOL 140mm Case Fan with Cooling Guard SL-FD14025 MASSCOOL SL-FD14025 140mm Case Fan, Compatibility: Case Fan Size : 140mm. Bearing Type: 2 Ball, RPM: 1000 RPM +/-10%, Air Flow: 45.32 CFM, Noise Level: 20 dBA, Power Connector: 4-pin power supply 3-pin motherboard : Color: Transparent. Physical Spec: Dimensions :140 x 140 x 25 mm , Features: Silent fan , Fan Guard. Manufacturer Warranty: Parts and Labor : 1 year limited