Vornado PCO300 Manuel D'utilisation page 16

Filter Replacement
3. Remove the Permanent Pre-Filter by pulling on the center tabs (C).
You may need to flex the Permanent Pre-Filter slightly to release
the tabs at the top and bottom.
±
C
16 English
C
4. To remove the HEPA Filter, after the Permanent Pre-Filter has been
removed, take hold of the tab along the perimeter of Filter and
pull to release.