120*120*38mm High Speed High Air Flow Cooling Fans DC 1238

120*120*38mm High Speed High Air Flow Cooling Fans DC 1238. High Air Flow & Speed: Delivers 100.71-146.9cfm air flow with speeds up to 3800rpm for efficient cooling. Long Life Expectancy: Dual ball bearings last 50,000-70,000 hours; sleeve bearings last 30,000 hours. Customizable Parameters: Voltage, speed, air flow, static pressure, and noise level can be customized. Multiple Function Options: Supports FG, RD, auto restart, PWM, tachometer, alarm, and waterproof features. Premium Bearing Quality: Uses imported Minebea NMB brand ball bearings from Japan for reliability. Robust Construction: Features PBT UL94V-0 glass fiber reinforced plastic blades and aluminum housing. Wide Certification Range: Certified with RoHS, ISO, CE, CCC, UL/TUV, and ISO9001/ISO14001. 100% Quality Testing: Every fan undergoes 100% visual and functional inspection before shipment.