Air Penetrator 184i PRO SST-AP184i-PRO Features: Industry leading air channeling fan Distinctive “Shark Force” fan blade design for lower noise and higher performance Dual ball bearing for long lifetime Wide 0 ~ 1,200 RPM speed range via PWM control Integrated air channeling grille double as fan guard for extra protection High air pressure and optimal system cooling performance Specifications: Model No. SST-AP184i-PRO Material Polycarbonate fan blades, PBT frame Color Black Application 180mm, 200mm Bearing Dual ball bearing Connectors 4 pin PWM Rated Voltage 12V Starting Voltage 5V Rated Current 0.31 ±0.04A Rated Power 3.7W Speed 0 ~ 1200 RPM Airflow 0 ~ 143.21 CFM Static Pressure 0 ~ 2.22 mmH2O Noise Level 0 ~ 34.5 dBA Dimension 180mm (W) x 32mm (H) x 180mm (D) Weight 410g