PUREFLOW 2021 Audi A5 Quattro Cabin Air Filter with HEPA and Antibacterial Technology, PC99334HX RZ19193H Includes four 24x24x1 MERV 11

Includes four 24x24x1 MERV 11 air filters for routine filter changes in residential HVAC systems

and pollution while adsorbing gases

helping reduce airborne particles inside your vehicle

Advanced captures smaller airborne particles than basic filters while maintaining balanced airflow for reliable heating and cooling system performance

and other common airborne particles for everyday home air filtration

PUREFLOW 2021 Audi A5 Quattro Cabin Air Filter with HEPA and Antibacterial Technology, PC99334HX RZ19193H Includes four 24x24x1 MERV 111st 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