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 30WH4 | Marvair MAA1024A "B2" | Difference |
|---|---|---|---|
| Unit width | 38.25" | 38.17" | -0.08" |
| Supply Air | 28" x 8" | 19.9" x 7.79" | -8.1" x -0.21" |
| Mismatch | Bard 30WH4 | Marvair MAA1024A "B2" | Difference |
|---|---|---|---|
| Unit height | 74" | 76.62" | +2.62" |
| Unit depth | 15.25" | 22.28" | +7.03" |
| Unit weight | 395 lbs | 378 lbs | -17 lbs |
| Return Air | 28" x 14" | 19.9" x 11.9" | -8.1" x -2.1" |
| Distance from the top to Supply | 1.375" | 2.21" | +0.835" |
| Distance between Supply and Return | 18" | 20.6" | +2.6" |
| Distance from Return to bottom | 32.625" | 34.12" | +1.495" |