The CFM-4028BG-1160-520-22 is a high-speed DC axial fan designed for thermal management. Operating at a rated voltage of 12 Vdc, it delivers an airflow of 19.51 CFM and a static pressure of 1.56 inch H2O while running at a rated speed of 16,000 RPM. This 40x40x28 mm fan incorporates a durable dual ball bearing system for a long life expectancy of 70,000 hours and includes both a tachometer signal for speed monitoring and a PWM input for precise speed control. Equipped with auto-restart and polarity protection, it is well-suited for use in compact electronics and other high-density equipment where reliable performance and speed management are critical.