DUCT-BD series has been designed for all the applications where it is necessary to keep the motor outside the airflow, because of smoke, dusts and humidity. The maximum admitted temperature of the conveyed air is 60°C in continuous service. Performances correspond to the DUCT-M series with a reduction of 5% in capacity. The series is constituted by 7 sizes with impeller diameter from 500 up to 1000 mm.
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