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 W18AA | Marvair ECUA18 | Difference |
|---|---|---|---|
| No matches in measurement | - | - | - |
| Mismatch | Bard W18AA | Marvair ECUA18 | Difference |
|---|---|---|---|
| Unit width | 33.3" | 18" | -15.3" |
| Unit height | 74.563" | 58.125" | -16.438" |
| Unit depth | 17.125" | 18.063" | +0.938" |
| Unit weight | 325 lbs | 247 lbs | -78 lbs |
| Supply Air | 19.88" x 7.88" | 14.688" x 12.125" | -5.192" x +4.245" |
| Return Air | 19.88" x 11.88" | 13.25" x 5" | -6.63" x -6.88" |
| Distance from the top to Supply | 2.183" | 20.688" | +18.505" |
| Distance between Supply and Return | 20.56" | 19.062" | -1.498" |
| Distance from Return to bottom | 32.06" | 1.25" | -30.81" |