The AEROMAX500 has been developed to remove the harmful unseen dust in an area of work. When using power tools we recommend you collect the dust at source with a M or H Class Dust extractor but not every particle of dust can be captured. Or sweep the area you need to clean using a M or H Class Vacuum Cleaner. Designed to be able to operate 24 hours a day it can continually work to clean the air you and those around you breathe. It is suitable for many applications from woodworking shops, machine rooms, repair workshops, bakeries, renovation areas and any other areas where silica dust from concrete, brick grout or mortar may be present. It is a running at 65dB the AEROMAX500 can easily used in occupied buildings when renovations or refits are being carried out. With HEPA 14 filtration you can be certain that the filtration is to the highest standard protecting both you and the people you are working with. For rooms needing a negative pressure then a duct can be attached to the machine