The Brondell O2+ Air Purifier replacement filter pack includes one True HEPA filter and one granular activated carbon filter and fits both the Source (P300) and Balance (P400) O2+ Air Purifier models. Both the Source and Balance will indicate when it is time to change the filters, which is recommended once a year.
Pack includes one certified True HEPA and one granulated carbon technology replacement filter
Filter pack is compatible with all Source and Balance O2+ air purifier models
O2+ replacement filter pack is great for removing allergens like: Dust, Smoke, Pollen, Pet Dander, Odor, Mold, VOCs
Easy to replace filter pack lasts one year (12 months)