Antec's TrueQuiet fans bring proven cooling and Quiet Computing to your system. Constructed for versatility, TrueQuiet fans include a convenient 2-speed switch that allows you to easily choose either silent or maximum RPM cooling. Because a functional computer relies on more than just cooling, TrueQuiet is equipped with silicone grommets and a uniquely-designed fan blade to reduce turbulence, vibration and noise for overall quiet operation. Upgrade your fans and add optimal cooling and functionality to your PC with TrueQuiet. RPM: 500RPM - 800RPM Air Flow: 20.3 CFM - 32.4 CFM Noise Level: 9.8 dBA - 20.0 dBA Dimensions: 140 mm x 140 mm x 25 mm Features: 2-way switch to select fan speed. Unique fan blade and silicone grommets to reduce turbulence and noise. Tool-less mounting screws for quick and easy installation. Parts: 1 year limited Labor: 1 year limited