The Blueair SmartFilter is the only filter available for the Protect air purifiers.
It consists of two filters attached by a strap at the top. Each filter has a particle filter media and activated carbon. The particle filter traps pollen, dust, mold, pet dander and infectious particles; the activated carbon layer absorbs gases, VOCs (Volatile Organic Compounds), and odors. The Protect air purifiers also have two pre-filters that can be cleaned with a dust cloth or by using the soft brush of a vacuum cleaner.
The SmartFilter also features an RFID chip that transmits data to the Blueair app, allowing the app to accurately calculate the remaining filter life.