≠ = ”S” specifies galvanized steel, “A” specifies aluminum)
| BACKGROUNDS for: | 8000 SERIES | 4000 SERIES |
| 1 POS LW8000 | 5Z8500≠ | 5Z4525≠ |
| 2 POS LW8000 | 5Z8550≠ | 5Z4526≠ |
| 3 POS LW8000 | 5Z8600≠ | 5Z4527≠ |
| 4 POS LW8000 | 5Z8650≠ | 5Z4528≠ |
| 3 POS TRI-CLS | 5Z4540≠ |
