... Ratio (Attenuation or Stage)01=1/99 or 1dB or 1 Stage, 02=2/98 or 2dB or 2 Stage, 03=3/97 or ... =50/125, 6=62.5/125, X=OthersPackage DimensionB1, B2, ..., F, KPigtail TypeB=250µm Bare fiber, L=900µm Loose ... steel tubeK120x80x18 plastic caseB53x60 steel tubeXU19'' x=1,2,3,4 U Rack MountD90x20x9.5 plastic caseXGX=1,2,3,4 U LGX box