Delta Electronics Ingress Protection Fans feature built-in resistance to environmental conditions such as dust, water and foreign objects that can disable and damage fans and thermal cooling equipment. Delta Electronics Ingress Protection (IP) fans provide IP55 and higher protection as an industry standard, offering protection against the intrusion of solid objects such as hands and fingers, as well as dust or dirt exposure, accidental contact, and water in the form of salt fog, moisture, or precipitation. Voltage - Rated 12VDC Size / Dimension Square - 40mm L x 40mm H Width 15.00mm Air Flow 14.8 CFM (0.414m³/min) Bearing Type Ball Fan Type Tubeaxial Features PWM Control, Speed Sensor (Tach) Noise 41.5 dB(A) Power (Watts) 1.92W RPM 11000 RPM Termination 4 Wire Leads Operating Temperature 14 ~ 158°F (-10 ~ 70°C) Weight 0.055 lb (24.95g) Current Rating (Amps) 0.160A Voltage Range 10.8 ~ 13.2VDC