A didw (double-inlet, double-width) blower is a type of centrifugal fan commonly used in HVAC systems and industrial applications. It consists of two inlets and two widths, allowing for increased airflow capacity and efficiency compared to single-inlet blowers. The symmetrical design ensures balanced airflow and pressure distribution, reducing vibration and noise levels. Didw blowers are versatile and can be found in various settings, from ventilation systems in buildings to cooling systems in manufacturing plants. Their efficient design makes them popular for applications requiring high volumes of air movement with minimal energy consumption.