3 in 1 filter: Pre-filter + HEPA 13 filter + Activated carbon filter Pre-filter catches large particles such as dust, hair, pet hair
HEPA 13 filter: removes fine dust, cigarette smoke, bacteria, mould, germs
Activated carbon filter: absorbs odours, smoke
Note: It is important to remove the cover before installing the new filter on your wine cellar to ensure proper operation.