AirDoctor 4000 Replacement Filter

AirDoctor's 3-Stage filtration with our UltraHEPA® and Premium Carbon/VOC layers is designed to capture fine and ultra-fine airborne contaminants like pollen, mold spores, pet dander, smoke, and bacteria and viruses; and gases, VOCs and odor.. We recommend replacing your AD4000 filter every 6 months. Fits all AD4000 models.