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 W18A2 | Bard WH381 | Difference |
|---|---|---|---|
| Distance from the top to Supply | 2.183" | 2.175" | -0.008" |
| Mismatch | Bard W18A2 | Bard WH381 | Difference |
|---|---|---|---|
| Unit width | 33.3" | 42.075" | +8.775" |
| Unit height | 70.563" | 84.875" | +14.312" |
| Unit depth | 17.125" | 22.432" | +5.307" |
| Unit weight | 325 lbs | 510 lbs | +185 lbs |
| Supply Air | 19.88" x 7.88" | 29.88" x 9.88" | +10" x +2" |
| Return Air | 19.88" x 11.88" | 29.88" x 15.88" | +10" x +4" |
| Distance between Supply and Return | 20.56" | 30" | +9.44" |
| Distance from Return to bottom | 28.06" | 26.94" | -1.12" |