Zehnder Filter set 10 x Coarse 60% (G4) + ePM1 50% (F7) for ComfoAir 70 400 300 071 is called a G filter

is called a G filter

The CIRCLE diffuser is suitable for plasterboard ceilings or walls

As the name suggests

Proven & reliable

Zehnder Filter set 10 x Coarse 60% (G4) + ePM1 50% (F7) for ComfoAir 70 400 300 071 is called a G filterThis set consists of ten filters, five filter Coarse 60% (G4) and five filter ePM1 50% (F7). Coarse 60% and ePM1 50% are the names according to the new filter standard ISO 16890. Coarse refers to particles measuring 10 microns. ePM1 refers to particles measuring 0,3 1 microns. Coarse 60% means that at least 60% of particles in the size interval 10 micron are removed. ePM1 50% means that at least 50% of particles in size range 0. 3 1 micron are