Example: AL-01-B-1 designates a single bracket with
square hub to fit an AL-01 Series fixture.
| Prefix | Fixture Depth | A | B |
| R-1, B-1 | 6-1/2" | 2-3/8" | 7" |
| R-1, B-1 | 8" | 2-3/8" | 7" |
| RA-1 | 8" | 2-7/8" | 7" |
| R-1, B-1 | 10" | 2-3/8" | 7" |
| RA-1 | 10" | 2-7/8" | 7" |
| RB-1 | 10" | 3-1/2" | 7" |
| RC-1 | 10" | 4" | 7" |
