The Silverstone FM121 120mm White Dual Ball-Bearing Fan is a high-quality cooling solution for computer cases. With a fan diameter of 120mm, this case fan designed by Silverstone is efficient in dissipating heat and maintaining optimal temperatures for your system. The dual ball-bearing design ensures smooth and quiet operation, making it a reliable choice for any computer setup. With its sleek white color, this fan not only provides effective cooling but also adds a stylish touch to your PC's interior. Includes fan controller adjusting from 800 to 2400 RPM.