The compact ebm-papst fan in the size of a tennis ball is equipped with a high-performance and high-efficiency EC motor with an airflow of up to 513 l/min. The vibration-damping material and ideal aerodynamics ensure its extremely quiet operation. (reading for 3 minutes)
Think economically. Try a radial fan with the modern GreenTech EC engine from the RADICAL series from EBM-Papst.