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 | Marvair ECUA18 | Bard WH604 | Difference |
|---|---|---|---|
| No matches in measurement | - | - | - |
| Mismatch | Marvair ECUA18 | Bard WH604 | Difference |
|---|---|---|---|
| Unit width | 18" | 42" | +24" |
| Unit height | 58.125" | 84.87" | +26.745" |
| Unit depth | 18.063" | 22.25" | +4.187" |
| Unit weight | 247 lbs | 510 lbs | +263 lbs |
| Supply Air | 14.688" x 12.125" | 29.88" x 9.88" | +15.192" x -2.245" |
| Return Air | 13.25" x 5" | 29.88" x 15.88" | +16.63" x +10.88" |
| Distance from the top to Supply | 20.688" | 2.11" | -18.578" |
| Distance between Supply and Return | 19.062" | 30" | +10.938" |
| Distance from Return to bottom | 1.25" | 27" | +25.75" |