As Aussie Vac we stock foam and cartridges filters to suit most bagless ducted vacuums.
To ensure your ducted vacuum works efficiently, you will need to regularly check to see if the ducted vacuum foam filter has reduced in quality or if the cartridge filter is clogged.
Cleaning the filters can be as simple as shaking it, blowing it with a air blower, or washing it in soapy water (if it can be washed). If washing a filter, please ensure that the filter is completely dry before putting in back in the machine.
We would recommend having a second filter on hand, so that you can still use your ducted vacuum whilst waiting for the filter to dry.