| Designator | SGM20 |
| System Type | Median Barrier (M) |
| Test Specification | NCHRP Report 350 |
| Test Level | TL-4 |
| Rail Type | Gate |
| Deflection Category | Rigid |
| Dynamic Deflection | Unknown |
| Working Width | Unknown |
| Aesthetic | Yes |
| Width | Unknown |
| Height | Unknown |
| Manufacturer | VALTIR, LLC |
| Drawing Status | Review Complete |
| Contact | VALTIR, LLC (f/k/a Trinity Highway) |
| FHWA Eligibility Letter | B-25B.pdf |
| Components | |
| Drawings | SGM20.pdf sgm20.dwg |
| Other Docs | B-25A.pdf |
| Archive | |
| External Links |