DeepCool FK120 computer case fan increase 10% fan blade surface for stronger heat dissipation PBT material Fan blades guarantee long-term usage with top durability and wear resistance Carefully constructed and tested to output increased static pressure and concentrated airflow Full load 1850RPM with 68.99CFM air flow builds efficient computer case cooling system Noise damping pads in fan avoid vibration keep noise level under 28dB(A) in full load mode 4-pin PWM PC fan matains balance between silence and performance to suit different requirements FK120 carries neither RGB nor ARGB lighting to build specific PC building theme without any LED