Type A - MOLECULAR SIEVE AND ACTIVATED CARBON
The right choice when you need to get breathable air. The molecular sieve eliminates humidity in the air and the activated carbon removes odors and any oil residues.

Type D - MOLECULAR SIEVE, ACTIVATED CARBON AND CO-CATALYST
The CO-catalyst, in addition to the molecular sieve and the activated carbon, will allow to absorb the dangerous Carbon Monoxide. Its use is indicated in the presence of internal combustion engines or in places where it is very likely to find an excessive amount of carbon monoxide.