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 18WH1 | Marvair ECUA12 | Difference |
|---|---|---|---|
| No matches in measurement | - | - | - |
| Mismatch | Bard 18WH1 | Marvair ECUA12 | Difference |
|---|---|---|---|
| Unit width | 32.25" | 18.25" | -14" |
| Unit height | 67.5" | 58" | -9.5" |
| Unit depth | 13.5" | 12" | -1.5" |
| Unit weight | 315 lbs | 160 lbs | -155 lbs |
| Supply Air | 20" x 8" | 14.375" x 11.75" | -5.625" x +3.75" |
| Return Air | 20" x 12" | 13.25" x 5" | -6.75" x -7" |
| Distance from the top to Supply | 1.25" | 20.875" | +19.625" |
| Distance between Supply and Return | 20.5" | 19.25" | -1.25" |
| Distance from Return to bottom | 25.75" | 1.125" | -24.625" |