... structure: NCF-V design, NJG 23-VH design. F*G structure: SL 1818** series, SL 1822** series, SL 1829** series, SL 1830** series, SL 1923** series.2 ... structure: NNC-V design, NNCF-V design, NNCL-V design.F*G structure: SL 1850** series, SL 0149** series, SL 0249** series, SL 0148** series, SL 0248** series ...