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 W30AY | Bard 20WA4 | Difference |
|---|---|---|---|
| Supply Air | 27.88" x 7.88" | 19.875" x 7.875" | -8.005" x -0.005" |
| Mismatch | Bard W30AY | Bard 20WA4 | Difference |
|---|---|---|---|
| Unit width | 38.2" | 32.375" | -5.825" |
| Unit height | 74.563" | 69.375" | -5.188" |
| Unit depth | 17.125" | 14.625" | -2.5" |
| Unit weight | 355 lbs | 280 lbs | -75 lbs |
| Return Air | 27.88" x 13.88" | 19.875" x 11.875" | -8.005" x -2.005" |
| Distance from the top to Supply | 2.123" | 1.625" | -0.498" |
| Distance between Supply and Return | 17.93" | 20.5" | +2.57" |
| Distance from Return to bottom | 32.75" | 27.5" | -5.25" |