... Custom wavelength*The Spec. is for 1XN Coupler only.1.Order InformationFBT-Type-Port-Wavelength-Coupling Ratio-Fiber Type ... 850&1310Coupling Ratio (Attenuation or Stage)01=1/99 or 1dB or 1 Stage, 02=2/98 or 2dB or ... 2.0m, 0=Adapter, X=OthersConnector TypeFU=FC/UPC, FA=FC/APC, SU=SC/UPC, SA=SC/APC,ST ... steel tubeK120x80x18 plastic caseB53x60 steel tubeXU19'' x=1,2,3,4 U Rack MountD90x20x9.5 plastic caseXGX ...