be quiet! Pure Wings 3 140 PWM High-Speed (BL109)

The be quiet! Pure Wings 3 140 PWM High-Speed (BL109) is a 140 mm fan designed for computer cases, liquid cooling system radiators, and air coolers where elevated air pressure, PWM control, and moderate noise levels are required. Featuring a black housing without illumination, this fan suits minimalist builds, workstations, gaming PCs, and systems where cooling performance takes priority over aesthetic lighting effects. The fan measures 140 × 25 × 140 mm and weighs approximately 188 g with cable included. At maximum speed with 100% PWM and 12 V supply, it reaches 1800 RPM, delivering 72.2 CFM or 122.6 m³/h airflow with static pressure up to 2.44 mm H₂O and noise levels reaching 30.5 dB(A). Nine optimized blades and a redesigned frame exit make it effective both for unrestricted case ventilation and for operating against resistance from grilles, dust filters, or radiators. The closed loop motor monitors actual speed and maintains target RPM under load. The fan features a 4-pin PWM connector, 460 mm cable length, Rifle Bearing construction, and a rated service life of 80,000 hours. It comes with four mounting screws.