Replace every 6-8 months. ???????????????????????????? ???????????????????????? ???????????????????????????? ???????????? ???????????????????? ????????????????????????: Seasonal sneezing or congestion?. It might be airborne pollen. ???? ???????????????????????? ???????????????????????? ???????????????????????????? ???????????? ???????????????????????????????????? ????????????????????: Choose from Original, Pet Allergy, Toxin Absorber or Mould filters to target specific air concerns.
