DESCRIPTION Though 20mm thick, GS120 pushes the same airflow as normal 25mm thick fans. You can save 5mm space, which may matters when you try to add a side panel fan and you already have a tower CPU heatsink.Or when your tower CPU heatsink fan slightly blocks your memory slots, you definitely need this 5mm space. That's when GS120 is designed for. FEATURES Slimness for More Space 20mm thickness allows for more space inside your case. You can easily mount big and tall heatsink as you want. PWM Function Bearing Stand With a 4-pin PWM connector, GS120 is able to lower down the fan speed when the system is getting idle. 7V Low-noise Adapter When your system is not running at full load, you can easily use this low-noise adapter to reduce the input voltage to lower down the fan speed. Rubber Cable Ties for Tidiness Four rubber buckles are used for the installation. The rubber material not only makes the installation quite easy but also absorbs vibration to the maximum so as to avoid the noise made by normal metal screws. Endurable Teflon Fan Cable The fan cable is made of PTFE (Poly Tetra Fluoro Ethylene), which withstands really high temperature and heavy duty usage to ensure a long lifespan. Rubber Cable Ties for Tidiness Two pieces of rubber cable ties are included to route the fan cable to make everything in place inside the case. This would provide a clean looking case and also improves the ventilation.