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 W36G3 | Difference |
|---|---|---|---|
| Supply Air | 20" x 8" | 27.88" x 7.88" | +7.88" x -0.12" |
| Distance from Return to bottom | 27.5" | 27.5" | 0" |
| Mismatch | Bard 18WH4 | Bard W36G3 | Difference |
|---|---|---|---|
| Unit width | 32.25" | 38" | +5.75" |
| Unit height | 69.375" | 81.63" | +12.255" |
| Unit depth | 13.5" | 24.25" | +10.75" |
| Unit weight | 315 lbs | 530 lbs | +215 lbs |
| Return Air | 20" x 12" | 27.88" x 13.88" | +7.88" x +1.88" |
| Distance from the top to Supply | 1.375" | 2.37" | +0.995" |
| Distance between Supply and Return | 20.5" | 30" | +9.5" |