PUREFLOW 2014 BMW 535i Cabin Air Filter with HEPA and Antibacterial Technology, PC4329HX RZ18162 Includes four 24x24x1 MERV 11

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

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

4th Stage: Advanced antibacterial micro technology reduces biofouling by suppressing the growth of algae

True Odor Control — Unscented By Design: Uses high-grade activated charcoal and OdorShield technology to help manage odors

Advanced multi-layer media supports fresh cabin air and balanced HVAC performance for a more comfortable driving experience—without added fragrance

PUREFLOW 2014 BMW 535i Cabin Air Filter with HEPA and Antibacterial Technology, PC4329HX RZ18162 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