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Freudenberg Filtration Technologies
Automotive Filters

micronAir particle filters

Protection against fine dusts and particles

micronAir particle filters protect against fine dusts, and also against pollens, road dust, abraded particles, soot, bacteria, industrial dusts and other respirable ultra-fine particles.


Exhaust fumes from diesel vehicles contain fine dusts and soot particles, smaller than 2.5 micrometers. This size of particle will not always be arrested by the mucus membranes in the nasal and pharyngeal cavities or by the nasal hairs. These particles are particularly healthhazardous, because they are able to trigger inflammations in the lung, and also transport toxic substances. Most of them are deposited in the lower respiratory tracts and the lungs. They are seen as a cause of respiratory tract diseases, cardio-vascular complaints and asthma. Carcinogenic effects are also attributed to them.

Extra protection for allergy sufferers

If pollens get inside the car unfiltered, allergysufferers are particularly at risk. Streaming eyes, dripping noses, shortness of breath or sneezing attacks reduce concentration levels and increase the accident risk. 

Difference between a micronAir particle filter and a combi filter

Basically the filter media of both micronAir cabin air filters are created equal: The prefilter is responsible for the filtration of coarse particles. The microfiber layer filters respirable and ultrafine particles from the air, for example particles which are found in diesel exhaust and soot. Both micronAir products provides effective protection against fine dust.
The micronAir combi filter has an additional layer of activated carbon to adsorb odors and gases, such as benzene and ozone. This is protected by a covering layer.