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 18WH4 | Bard 48WH6 | Difference |
|---|---|---|---|
| Distance from the top to Supply | 1.375" | 1.375" | 0" |
| Mismatch | Bard 18WH4 | Bard 48WH6 | Difference |
|---|---|---|---|
| Unit width | 32.25" | 42" | +9.75" |
| Unit height | 69.375" | 84" | +14.625" |
| Unit depth | 13.5" | 22" | +8.5" |
| Unit weight | 315 lbs | 530 lbs | +215 lbs |
| Supply Air | 20" x 8" | 30" x 10" | +10" x +2" |
| Return Air | 20" x 12" | 30" x 16" | +10" x +4" |
| Distance between Supply and Return | 20.5" | 30" | +9.5" |
| Distance from Return to bottom | 27.5" | 26.625" | -0.875" |