UK LCD display Ozone Generator Machine Industrial Air Purifier Ozonator Ozonizer. 60000mg/h Ozone Generator Machine Industrial Air Purifier Ozonator Ozonizer 90W. · High Performance : This duct fan has an airflow capacity of up to 220 m³/h. Equipped with ball bearings to ensure the duct fan operates at a low noise level of around 31dB.