>> P.214
IdentificationNumberandSpecificationⅡ-206ExampleofanidentificationnumberThespecificationofFTandFTW…Aareindicatedbytheidentificationnumber.Indicatetheidentificationnumber,consistingofamodelcode,dimensions,asupplementalcode,andaselectioncodeforeachspecificationtoapply.123215647FT4030ーJ450B4FT2010NB4FTW4030VAーJ450B4Model1ModelcodePageⅡ-207Rollersize2Widthofretainer3DimensionsPageⅡ-207Lengthofretainer4Retainermaterial5SupplmentalcodePageⅡ-207PageⅡ-208Jointedflatrollercage6Rollerselectionclass7SelectioncodePageⅡ-208
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