Blueair's most advanced filter technology with smart RFID chip for data-based filter lifetime tracking
•HEPASilet Filter - removes particles like pollen, dust, smoke, viruses and bacteria •Activated Carbon Filter - neutralises odours such as bushfire smoke, gases, and VOCs •Designed specifically to fit the Blueair HealthProtect 7770i Air Purifier •Manufacturer recommends you replace the filter every 6 - 12 months based on normal usage (your unit will let you know)