CFM-4020V-180-275-20 is a 12 Vdc DC axial fan from the CFM-40V series designed for efficient thermal management in compact spaces. The fan features a 40 x 40 x 20 mm frame with a 4-pole DC brushless motor and omniCOOL™ bearing system, delivering 8000 RPM at rated voltage with an air flow of 10.8 CFM and static pressure of 0.29 inch H2O. Operating input voltage ranges from 4.5 to 13.8 Vdc, with a starting voltage of 4.5 Vdc, and the fan generates 27.5 dB(A) noise at 1 meter. The unit is constructed from PBT material (UL94V-O) and weighs 29 grams, with a rated life expectancy of 70,000 hours at 40°C and 65% RH. This fan is ideal for server cooling, telecommunications equipment, and industrial electronics requiring reliable, compact thermal solutions with auto-restart protection and optional tachometer or rotation detector signals.