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 W18LF | Bard WA121 | Difference |
|---|---|---|---|
| Distance from the top to Supply | 2.18" | 2.25" | +0.07" |
| Mismatch | Bard W18LF | Bard WA121 | Difference |
|---|---|---|---|
| Unit width | 33.3" | 30.125" | -3.175" |
| Unit height | 74.56" | 46" | -28.56" |
| Unit depth | 17.13" | 14.625" | -2.505" |
| Unit weight | 329 lbs | 155 lbs | -174 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 | 20.56" | 5" | -15.56" |
| Distance from Return to bottom | 32.06" | 23.75" | -8.31" |