The be quiet! Silent Wings 4 is a premium 140mm case fan designed for high performance and quiet operation. With Pulse Width Modulation (PWM) technology, this fan adjusts its speed automatically to provide efficient cooling, making it ideal for both gaming and workstation builds.

• 140mm size optimized for excellent airflow and pressure
• PWM functionality for quiet operation and efficient cooling
• Innovative fan blade design for reduced noise levels
• Long-lasting fluid-dynamic bearing for durability
• Versatile use in various case configurations