Coarse filters in G1 to G4 classes meeting EN779:2012 standards.

Medium efficiency filters in M5 and M6 classes meeting EN779:2012 standards.

Fine filters in F5 and F6 classes to EN779:2002 and F7 to F9 classes to EN779:2012 standards.

EPA grade filters in E10, E11, and E12 classes meeting EN1822:2009 standards.

HEPA grade filters in H13 and H14 classes meeting EN1822:2009 standards.

ULPA grade filters in U15, U16, and U17 classes meeting EN1822:2009 standards.