The Dyson HEPA Big+Quiet Formaldehyde purifier uses Cone Aerodynamics to deliver up to 90 litres of airflow per second of purified air, and a CO2 sensor to promote a clean and comfortable indoor environment. It is designed with a fixed projection angle of 50 degrees to reduce airflow interference and operates at a Sound Power Level of 55.6 decibels of noise on maximum airflow speed.
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