| Model Code | Description | |
|---|---|---|
| 01 | 641.813, 641.817, 641.893, 649.813, 649.857, 658.416, 658.418, 658.419, 658.466, 658.468, 658.469, 658.470, 658.471, 658.473, 658.474 | DOOR STEP,MOVEABLE;MOUNTING AND INTERMEDIATE STEP |
| 02 | 641.813, 641.817, 641.893 | INTERMEDIATE SIZE |
| 03 | 641.817 | INTERMEDIATE STEP,NARROW |