| Model Code | Description | |
|---|---|---|
| 01 | 649.813, 649.857, 658.466, 658.468, 658.469, 658.470, 658.471, 658.473, 658.474 | AIR INTAKE FROM ABOVE CAB |
| 02 | 649.813, 649.857, 658.466, 658.468, 658.469, 658.470, 658.471, 658.473, 658.474 | REAR TOP;USED FOR TANDEM AIR CLEANER |
| 03 | 649.813, 649.857, 658.466, 658.468, 658.469, 658.470, 658.471, 658.473, 658.474 | REAR TOP;USED WITH REFRIGERATING UNIT |