This article describes a 315mm backward impeller centrifugal blower designed for high pressure applications in HVAC systems and ventilation. It highlights features such as high pressure output, plug fan design, and compatibility with AHU and ventilation systems, utilizing BLEC external motors with 50/60 Hz frequency. Ideal for specialized air handling and ventilation needs, this blower offers reliable performance and efficient airflow management. Suitable for engineers and HVAC professionals seeking detailed specifications of high-capacity blower units.