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 WA4842 | Bard WA121 | Difference |
|---|---|---|---|
| Distance from the top to Supply | 2.365" | 2.25" | -0.115" |
| Mismatch | Bard WA4842 | Bard WA121 | Difference |
|---|---|---|---|
| Unit width | 42" | 30.125" | -11.875" |
| Unit height | 84.875" | 46" | -38.875" |
| Unit depth | 22.25" | 14.625" | -7.625" |
| Unit weight | 500 lbs | 155 lbs | -345 lbs |
| Supply Air | 19.88" x 7.88" | 17" x 5" | -2.88" x -2.88" |
| Return Air | 19.88" x 11.88" | 17" x 10" | -2.88" x -1.88" |
| Distance between Supply and Return | 20.5" | 5" | -15.5" |
| Distance from Return to bottom | 42.25" | 23.75" | -18.5" |