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