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 18WA1 | Difference |
|---|---|---|---|
| No matches in measurement | - | - | - |
| Mismatch | Marvair ECUA18 | Bard 18WA1 | Difference |
|---|---|---|---|
| Unit width | 18" | 32.25" | +14.25" |
| Unit height | 58.125" | 67.5" | +9.375" |
| Unit depth | 18.063" | 13.5" | -4.563" |
| Unit weight | 247 lbs | 310 lbs | +63 lbs |
| Supply Air | 14.688" x 12.125" | 20" x 8" | +5.312" x -4.125" |
| Return Air | 13.25" x 5" | 20" x 12" | +6.75" x +7" |
| Distance from the top to Supply | 20.688" | 1.375" | -19.313" |
| Distance between Supply and Return | 19.062" | 20.5" | +1.438" |
| Distance from Return to bottom | 1.25" | 25.625" | +24.375" |