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 18WH2 | Bard 30WH5 | Difference |
|---|---|---|---|
| Distance from the top to Supply | 1.375" | 1.125" | -0.25" |
| Mismatch | Bard 18WH2 | Bard 30WH5 | Difference |
|---|---|---|---|
| Unit width | 32.25" | 38.25" | +6" |
| Unit height | 69.375" | 74" | +4.625" |
| Unit depth | 13.5" | 15.25" | +1.75" |
| Unit weight | 315 lbs | 395 lbs | +80 lbs |
| Supply Air | 20" x 8" | 28" x 8" | +8" x 0" |
| Return Air | 20" x 12" | 28" x 14" | +8" x +2" |
| Distance between Supply and Return | 20.5" | 18" | -2.5" |
| Distance from Return to bottom | 27.5" | 32.875" | +5.375" |