| Model Code | Description | |
|---|---|---|
| 01 | 437.420, 437.430 | DOUBLE CODE H50 |
| 02 | 437.425, 437.426, 437.435 | DOUBLE CODE H50 |
| 03 | 437.421, 437.431 | DOUBLE CODE H50 |
| 04 | 437.431 | DOUBLE CODE H50 |
| 05 | 437.426 | DOUBLE CODE H50 |
| 06 | 437.436 | DOUBLE CODE H50 |
| 07 | 437.430 | DOUBLE CODE H50+(X18/X18/X20) |
| 08 | 437.426, 437.435 | DOUBLE CODE H50 |
| 21 | 437.427, 437.437 | CODE H50 |