PUREFLOW 2016 BMW 328i xDrive Cabin Air Filter with HEPA and Antibacterial Technology, PC4255HX Voyager 1st Stage: For drivers and

1st Stage: For drivers and passengers who suffer from severe allergies

including sub-micron particles

and pollution while adsorbing gases

Most vehicles will take less than 10 minutes to replace

PUREFLOW 2016 BMW 328i xDrive Cabin Air Filter with HEPA and Antibacterial Technology, PC4255HX Voyager 1st Stage: For drivers and1st Stage: For drivers and passengers who suffer from severe allergies, PUREFLOW HEPA (High Efficiency Particulate Air) offers 99. 97% efficiency, capturing microscopic pollutants including pollen and other allergens (may result in a minor restriction to airflow). 2nd & 3rd Stage: Activated charcoal adsorbs harmful gases like carbon monoxide and sulfur dioxide. This layer is combined with baking soda to absorb bad odors. 4th Stage: Advanced