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 MAA1024A "B2" | Bard W49A1 | Difference |
|---|---|---|---|
| Unit depth | 22.28" | 22.432" | +0.152" |
| Distance from the top to Supply | 2.21" | 2.175" | -0.035" |
| Mismatch | Marvair MAA1024A "B2" | Bard W49A1 | Difference |
|---|---|---|---|
| Unit width | 38.17" | 42.075" | +3.905" |
| Unit height | 76.62" | 84.875" | +8.255" |
| Unit weight | 378 lbs | 525 lbs | +147 lbs |
| Supply Air | 19.9" x 7.79" | 29.88" x 9.88" | +9.98" x +2.09" |
| Return Air | 19.9" x 11.9" | 29.88" x 15.88" | +9.98" x +3.98" |
| Distance between Supply and Return | 20.6" | 30" | +9.4" |
| Distance from Return to bottom | 34.12" | 26.94" | -7.18" |