Heavy duty cooling fan, 140x140x25 mm, 12V, 4-pin PWM, max. 3000 RPM, max. 41.3 dB (A), >150, 000 h MTTF; Award-winning 140x25mm A-series fan with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior cooling efficiency; 12V 3000rpm model ( 41.3 dB) with 4-pin PWM connector for automatic speed control via 4-pin PWM fan headers, broad 800-3000rpm speed range; High-speed industrialPPC version for industrial heavy-duty applications that require extreme cooling performance and advanced ingress protection; Ruggedised fibre-glass reinforced polyamide construction and IP52 certified water and dust protection