CFM-4020V-280-275-20 is a compact 40 x 40 x 20 mm DC axial fan designed for efficient thermal management in space-constrained applications. Operating at 24 Vdc input (8–27.6 Vdc range), this model delivers a rated speed of 8000 RPM with a maximum airflow of 10.8 CFM and static pressure of 0.29 inch H2O. The fan features an omniCOOL™ bearing system, 4-pole DC brushless motor, and PBT housing (UL94V-O), with auto restart protection standard on all models. With a maximum input current of 45 mA and power consumption of 1.08 W, it produces 27.5 dB(A) noise at 1 m and offers a life expectancy of 70,000 hours at 40°C and 65% RH. This fan is ideal for server cooling, telecommunications equipment, and industrial control systems requiring reliable, low-noise thermal solutions with tachometer signal capability.