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 AVPA12 (CABINET B) | Bard 20WA4 | Difference |
|---|---|---|---|
| Supply Air | 17" x 7.813" | 19.875" x 7.875" | +2.875" x +0.062" |
| Mismatch | Marvair AVPA12 (CABINET B) | Bard 20WA4 | Difference |
|---|---|---|---|
| Unit width | 30.125" | 32.375" | +2.25" |
| Unit height | 52" | 69.375" | +17.375" |
| Unit depth | 12.625" | 14.625" | +2" |
| Unit weight | 194 lbs | 280 lbs | +86 lbs |
| Return Air | 17" x 8.375" | 19.875" x 11.875" | +2.875" x +3.5" |
| Distance from the top to Supply | 1.063" | 1.625" | +0.562" |
| Distance between Supply and Return | 0.749" | 20.5" | +19.751" |
| Distance from Return to bottom | 34" | 27.5" | -6.5" |