The Noctua NF-A14x25 G2 PWM Sx2-PP is a premium double pack of 140 mm fans designed for exceptional thermal performance with minimal noise. These advanced computer fans deliver a robust airflow of 43.4 cubic meters per minute at 1500 RPM, with a quiet noise level of 24.8 decibels. Constructed from Noctua's proprietary Sterrox liquid crystal polymer material, the fans combine structural integrity with optimized aerodynamics for strong airflow and static pressure performance. The 4-pin PWM interface allows for dynamic speed control, automatically adjusting the fan speed based on thermal requirements for efficient cooling management. This dual fan configuration is particularly effective for PC case ventilation, radiator cooling systems, and CPU cooler applications where balanced airflow and acoustic performance are priorities. The integrated anti-vibration pads minimize the transfer of mechanical resonance to the chassis, further reducing operational noise. With their neutral beige-brown color scheme, these fans maintain Noctua's distinctive aesthetics while providing reliable cooling performance for demanding computer environments. The complete package includes all necessary mounting components for easy installation in standard 140 mm fan positions. These fans represent the successor model to previous generations of Noctua cooling solutions, incorporating refined blade geometry and motor technology for improved efficiency across various operating conditions.