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 ECUA12 | VoltAire AT04 | Difference |
|---|---|---|---|
| No matches in measurement | - | - | - |
| Mismatch | Marvair ECUA12 | VoltAire AT04 | Difference |
|---|---|---|---|
| Unit width | 18.25" | 17.4" | -0.85" |
| Unit height | 58" | 29.5" | -28.5" |
| Unit depth | 12" | 12.9" | +0.9" |
| Unit weight | 160 lbs | 74.7 lbs | -85.3 lbs |
| Supply Air | 14.375" x 11.75" | 14.38" x 9.5" | +0.005" x -2.25" |
| Return Air | 13.25" x 5" | 14.38" x 11" | +1.13" x +6" |
| Distance from the top to Supply | 20.875" | 1.59" | -19.285" |
| Distance between Supply and Return | 19.25" | 5.85" | -13.4" |
| Distance from Return to bottom | 1.125" | 1.56" | +0.435" |