Designation

European Filter Class

MERV Rating

Recomended Final Pressure Drop (Pa)

Average Arrestance (Am) of Synthetic dust (%)

MERV1

G1

G2

G3

G4

MERV 1

MERV 2-4

MERV 5-6

MERV 7-8

250

250

250

250

50≤Am<65

65 ≤ Am < 80

80 ≤ Am < 90

90 ≤ Am