These units don’t appear to have much in common. If you’re replacing one with the other, you’ll need to make some modifications to wall, unit or something in between with a plate or adapter curb.
| Match | VoltAire AT04 | Bard 20WH | Difference |
|---|---|---|---|
| No matches in measurement | - | - | - |
| Mismatch | VoltAire AT04 | Bard 20WH | Difference |
|---|---|---|---|
| No mismatches in measurement | - | - | - |