The CROWN series is a ‘turbine inspired’ high static pressure fan (1.87mm H2O) that features nine clear blades. Available in both AC120 (120mm) and AC140 (140mm) sizes, the surrounding circular casing is tapered outwards at the edge to reduce noise, allows more airflow and provides a more attractive overall lighting effect. The corner mounting system incorporates four shockproof rubber pads to eliminate any vibration transfer to the chassis.