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 WA421 | Bard 18WH2 | Difference |
|---|---|---|---|
| No matches in measurement | - | - | - |
| Mismatch | Bard WA421 | Bard 18WH2 | Difference |
|---|---|---|---|
| Unit width | 42" | 32.25" | -9.75" |
| Unit height | 84.875" | 69.375" | -15.5" |
| Unit depth | 22.5" | 13.5" | -9" |
| Unit weight | 500 lbs | 315 lbs | -185 lbs |
| Supply Air | 29.875" x 9.875" | 20" x 8" | -9.875" x -1.875" |
| Return Air | 29.875" x 15.875" | 20" x 12" | -9.875" x -3.875" |
| Distance from the top to Supply | 2.125" | 1.375" | -0.75" |
| Distance between Supply and Return | 30" | 20.5" | -9.5" |
| Distance from Return to bottom | 27" | 27.5" | +0.5" |