Delta Electronics PFB DC Axial Fans are powerful DC fans with high air pressure stator blades. Delta PFB fans represent a significant advancement from FFB series fans for IT applications. PFB fans feature a plastic impeller and frame, as well as a maintenance-free ball bearing system. FEATURES Bearing type - ball bearing Impeller and frame material - plastic (UL 94V-0) Lead wires UL 1007 AWG #24 or equivalent Red wire positive (+) Black wire negative (-) Voltage - Rated 24VDC Size / Dimension Square - 120mm L x 120mm H Width 38.00mm Air Flow 252.8 CFM (7.08m³/min) Bearing Type Ball Fan Type Tubeaxial Features Locked Rotor Protection Noise 66.5 dB(A) Power (Watts) 48.00W RPM 5500 RPM Termination 2 Wire Leads