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 36WA3 | Difference |
|---|---|---|---|
| Distance from the top to Supply | 1.59" | 1.375" | -0.215" |
| Mismatch | VoltAire AT04 | Bard 36WA3 | Difference |
|---|---|---|---|
| Unit width | 17.4" | 38.25" | +20.85" |
| Unit height | 29.5" | 74" | +44.5" |
| Unit depth | 12.9" | 15.25" | +2.35" |
| Unit weight | 74.7 lbs | 385 lbs | +310.3 lbs |
| Supply Air | 14.38" x 9.5" | 28" x 8" | +13.62" x -1.5" |
| Return Air | 14.38" x 11" | 28" x 14" | +13.62" x +3" |
| Distance between Supply and Return | 5.85" | 18" | +12.15" |
| Distance from Return to bottom | 1.56" | 32.625" | +31.065" |