Filtration class: EN 779: G4/F9 

Filtration material: polyester, micro fiberglass 

Frame: cink or stainless steel

Specification:

Sizes,Nominal air fllow rate,Initial pressure drop,
mmm3 /hPa
287x287x60080055
592x287x600170055
490x592x600290055
592x592x600350055

For more information see the catalog.