These units dimensions are physically identical. Replacing one for the other shouldn’t be any problem just make sure to double check your capacity and voltages.
| Match | Bard W18AB | Bard W18AA | Difference |
|---|---|---|---|
| Unit width | 33.3" | 33.3" | 0" |
| Unit height | 74.563" | 74.563" | 0" |
| Unit depth | 17.125" | 17.125" | 0" |
| Unit weight | 325 lbs | 325 lbs | 0 lbs |
| Supply Air | 19.88" x 7.88" | 19.88" x 7.88" | 0" |
| Return Air | 19.88" x 11.88" | 19.88" x 11.88" | 0" |
| Distance from the top to Supply | 2.183" | 2.183" | 0" |
| Distance between Supply and Return | 20.56" | 20.56" | 0" |
| Distance from Return to bottom | 32.06" | 32.06" | 0" |
| Mismatch | Bard W18AB | Bard W18AA | Difference |
|---|---|---|---|
| No mismatches in measurement | - | - | - |