PUREFLOW 2011 Audi S4 Cabin Air Filter with HEPA and Antibacterial Technology, PC6071HX PC8184X 2010 Buick LaCrosse 3

2010 Buick LaCrosse 3

2004-03 GMC Sierra 3500 8

2004-01 Volvo V70 2

Includes four 16x16x1 MERV 11 air filters for routine filter changes in residential HVAC systems

2012-07 Hyundai Veracruz 3

PUREFLOW 2011 Audi S4 Cabin Air Filter with HEPA and Antibacterial Technology, PC6071HX PC8184X 2010 Buick LaCrosse 31st 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