DXG (GDF) family of low-noise rectangular duct fans DXG (GDF) family of low-noise box-shaped pipe fan-I DXG (GDF) family of low-noise box-shaped pipe fan-II DXG-type blower Dimensions (Unit: mm) in the form of machine number ABCDEFG n Ⅰ type 3.2 300 3,303,605,005,305,605,308 3.6 / 4,400,430,460,600,630,660 700 11 4.5 450 480,510,700,730,760 780,125,500,530,560 80,083,086,088,012 5.6 550 580 610 100,010,301,060,980 14 Ⅱ type 2.5 250 2,803,104,204,504,804,808 3 300 3,303,605,005,305,605,608 3.5 350 380,410,600,630,660 640,104,400,430,480 70,073,076,078,012 4.5 450 480 530 740 770,800,810,125,500 530 580 80083086088012 5.5 5505806301010 1040107098014