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 | Bard W18H1 | VoltAire AT12 | Difference |
|---|---|---|---|
| Distance from the top to Supply | 2.183" | 2.02" | -0.163" |
| Mismatch | Bard W18H1 | VoltAire AT12 | Difference |
|---|---|---|---|
| Unit width | 33.3" | 16.39" | -16.91" |
| Unit height | 70.563" | 43.99" | -26.573" |
| Unit depth | 17.125" | 12.3" | -4.825" |
| Unit weight | 360 lbs | 94.6 lbs | -265.4 lbs |
| Supply Air | 19.88" x 7.88" | 13.5" x 11.75" | -6.38" x +3.87" |
| Return Air | 19.88" x 11.88" | 13.5" x 16.62" | -6.38" x +4.74" |
| Distance between Supply and Return | 20.56" | 11.6" | -8.96" |
| Distance from Return to bottom | 28.06" | 2" | -26.06" |