| Designator | RWB03a |
| Category | Rail (R) |
| Type | W-Beam (W) |
| Function | Backup Plate (B) |
| Manufacturer | Non-Proprietary |
| FHWA Eligibility Letter | |
| Contact | Midwest Roadside Safety Facility |
| Drawings | |
| Other Docs | |
| Archive | |
| External Links |
12″ W-Beam Backup Plate with Holes
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