Replaceable filter kit for the HL-OP-11/WiFi air purifier
3-layer filter:
Prefilter: pre-filtering of air to remove dust, allergens and hair from the air
Activated carbon filter: filtering of formaldehyde, benzene, harmful airborne gases and all bad odours
HEPA 13 filter: main filtering of air to remove remaining dust, pollens, allergens, mould spores and smoke