?Class Size W*H * D Initial resistance Final resistance Rated airflow
W*H*D ( mm )
G3 595*595*20 30 200 2000
290*595*25 1700
595*595*46 3400
595*595*96 3900
595*595*105 4200
595*595*120 4500
G4 595*595*20 38 260 2000
595*595*46 3400
290*595*46 1700
595*595*96 3900
290*595*96 1900
595*595*105 4200
595*595*120 4500
foldaway filter mesh