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 W12AAA | Bard W18LY | Difference |
|---|---|---|---|
| Distance from the top to Supply | 2.25" | 2.183" | -0.067" |
| Mismatch | Bard W12AAA | Bard W18LY | Difference |
|---|---|---|---|
| Unit width | 30.13" | 33.3" | +3.17" |
| Unit height | 48" | 74.563" | +26.563" |
| Unit depth | 14.63" | 17.125" | +2.495" |
| Unit weight | 185 lbs | 329 lbs | +144 lbs |
| Supply Air | 17" x 5" | 19.88" x 7.88" | +2.88" x +2.88" |
| Return Air | 17" x 10" | 19.88" x 11.88" | +2.88" x +1.88" |
| Distance between Supply and Return | 5" | 20.56" | +15.56" |
| Distance from Return to bottom | 25.75" | 32.06" | +6.31" |