The case fan UCTB9 from Enermax is economical, quiet and powerful. It is optimally tuned for optimum cooling performance with quiet operation and smooth running and persistent silent thanks to patented Twister bearing technology. By seven to Batwing blades up to 20% more air flow is achieved. The punched HALO frame allows additional fresh air supply and effective reduction of air turbulences. The three-piece frame construction is reinforced aluminum for a long service life. For optimal cleaning of dirt and dust from the fan blades of the UCTB9 can easily decrease.