4th generation filter, green (removes formaldehyde, haze, dust, smoke, and odors), 4th generation filter, purple (removes formaldehyde, haze, bacteria, smoke, and odors), 4th generation filter, white (removes formaldehyde, haze, bacteria, and has antiviral properties), 4th generation filter, golden armor (removes formaldehyde, haze, bacteria, and has antiviral properties), 5th generation filter, green (removes formaldehyde, haze, dust, smoke, and odors), 5th generation filter, purple (removes formaldehyde, haze, bacteria, smoke, and odors), 5th generation filter, white (removes formaldehyde, haze, bacteria, and has antiviral properties), 5th generation filter, golden armor (removes formaldehyde, haze, bacteria, and has antiviral properties), 4th/5th generation, upgraded with large carbon filter for enhanced formaldehyde removal, recommended model, 4th/5th generation, upgraded with large carbon filter + small carbon filter for enhanced formaldehyde removal, recommended model, 4th generation, international gray (removes formaldehyde, haze, bacteria, and has antiviral properties), 5th generation, international gray (removes formaldehyde, haze, bacteria, and has antiviral properties)
