During the development of the new P12 PWM PST special emphasis was placed on a focused air flow and a high static pressure. The fan guarantees extremely efficient cooling, even with increased air resistance. Therefore, the P12 PWM PST is particularly suitable for use on heat sinks, radiators as well as in pinhole and filters. Technical Details  Fan: 120 mm, 200 - 1,800 rpm (PWM controlled)  Air flow: 56.3 CFM / 95.65 m³ / h (@ 1,800 rpm)  Noise level: 0.3 sone (@ 1,800 rpm)  Static pressure: 2.2 mm H2O (@ 1,800 rpm)  Typical voltage: + 12 V DC  Starting voltage: 3.9 V DC  Cable length: 400 mm  Sub PST Cable Length: 50 mm