Noctua NF-A12x25 G2 PWM Sx2-PP, High-Performance Quiet Fans 2x120mm | High Airflow & Static Pressure, Low-Noise 25mm Thick Fans, Speed-Offset 2-Pack, for Coolers/Radiators/Cases, 1800rpm 4-Pin

Trusted Noctua quality with premium-grade SSO2 bearing (MTTF > 150,000 h), safety certifications from UL and TÜV, protected against reverse polarity, over voltage and over current (short-circuits). Ideal choice for push-pull applications as well as situations where two or more fans are operating side by side (240 or 360mm water cooling radiators, case intake or exhaust fans, etc.). Dedicated push-pull set (Sx2-PP) with two NF-A12x25 G2 PWM 120x25mm fans that are slightly off-set in speed (+/- ~50rpm) in order to avoid undesired acoustic interaction phenomena. State-of-the-art engineering (Progressive Bend impeller with winglets and Centrifugal Turbulator, Flow Acceleration Channels, AAO frame) and construction (Sterrox LCP, ultra-tight tip clearance). Next-gen 120x25mm design for unprecedented quiet cooling performance in both high airflow and high static pressure applications: ideal as a PC case fan, on CPU coolers and water cooling radiators!.