Ryco Cabin Air Filter RCA189C Ultra-Ceramic either paper or rubber 'O'

either paper or rubber 'O' rings (sealing rings)

quieter braking and high performance in challenging driving conditions

including pillar

Acts as an odour barrier protecting vehicle occupants from harmful exhaust gases and noxious odours

That's small when compared to the human hair which is approximately 90 micron

Ryco Cabin Air Filter RCA189C Ultra-Ceramic either paper or rubber 'O'Ryco Cabin Air Filters deliver an improved cleaner breathing environment for vehicle passengers. Features and Benefits Reduce the amount of harmful contaminants entering the vehicle via the heating ventilation and air conditioning (HVAC) system. Reduces respirable particles that lead to respiratory problems, headaches, nausea and fatigue. Allergy protection for vehicle occupants from allergy causing particles such as pollens, fungus spores, dirt and