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 20WA4 | Bard W12AB | Difference |
|---|---|---|---|
| Unit depth | 14.625" | 14.63" | +0.005" |
| Mismatch | Bard 20WA4 | Bard W12AB | Difference |
|---|---|---|---|
| Unit width | 32.375" | 30.13" | -2.245" |
| Unit height | 69.375" | 48" | -21.375" |
| Unit weight | 280 lbs | 194 lbs | -86 lbs |
| Supply Air | 19.875" x 7.875" | 17" x 5" | -2.875" x -2.875" |
| Return Air | 19.875" x 11.875" | 17" x 10" | -2.875" x -1.875" |
| Distance from the top to Supply | 1.625" | 2.25" | +0.625" |
| Distance between Supply and Return | 20.5" | 5" | -15.5" |
| Distance from Return to bottom | 27.5" | 25.75" | -1.75" |