ASTBERG VENTILATION Astberg Air Purification Box 3 Layer Filtration PRE-HEPA-CARBON 200 mm Exhaust Fan  (Black)

It is equipped with multi-layer filter and activated carbon, high efficiency and filter PM2.5 and purify air. It can used t a silent fan, suitable for a variety of small hidden installation environments. Intake air filtration system designed to circulate fresh air and block pollutants from entering indoor settings like homes, hospitals, and industrial warehouses. Its three stages filtration includes primary filter, HEPA high efficient filter, activated carbon filter , air filters in exhaust and supply air streams The humanized design does not request to use any tools to replace the filter core. PM2.5 and formaldehyde etc. other harmful substances