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 W18LB | Bard 30WA6 | Difference |
|---|---|---|---|
| Supply Air | 19.88" x 7.88" | 27.875" x 7.875" | +7.995" x -0.005" |
| Mismatch | Bard W18LB | Bard 30WA6 | Difference |
|---|---|---|---|
| Unit width | 33.3" | 38" | +4.7" |
| Unit height | 74.563" | 74" | -0.563" |
| Unit depth | 17.125" | 16.5" | -0.625" |
| Unit weight | 325 lbs | 375 lbs | +50 lbs |
| Return Air | 19.88" x 11.88" | 27.875" x 13.875" | +7.995" x +1.995" |
| Distance from the top to Supply | 2.183" | 1.375" | -0.808" |
| Distance between Supply and Return | 20.56" | 18" | -2.56" |
| Distance from Return to bottom | 32.06" | 32.875" | +0.815" |