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 WH183 | Difference |
|---|---|---|---|
| No matches in measurement | - | - | - |
| Mismatch | VoltAire AT04 | Bard WH183 | Difference |
|---|---|---|---|
| Unit width | 17.4" | 33.3" | +15.9" |
| Unit height | 29.5" | 70.563" | +41.063" |
| Unit depth | 12.9" | 17.125" | +4.225" |
| Unit weight | 74.7 lbs | 300 lbs | +225.3 lbs |
| Supply Air | 14.38" x 9.5" | 19.88" x 7.88" | +5.5" x -1.62" |
| Return Air | 14.38" x 11" | 19.88" x 11.88" | +5.5" x +0.88" |
| Distance from the top to Supply | 1.59" | 2.183" | +0.593" |
| Distance between Supply and Return | 5.85" | 20.56" | +14.71" |
| Distance from Return to bottom | 1.56" | 28.06" | +26.5" |