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 MHP36A | Bard 18WH6 | Difference |
|---|---|---|---|
| Unit width | 32.375" | 32.375" | 0" |
| Supply Air | 28" x 8" | 19.875" x 7.875" | -8.125" x -0.125" |
| Distance from the top to Supply | 1.375" | 1.625" | +0.25" |
| Mismatch | Bard MHP36A | Bard 18WH6 | Difference |
|---|---|---|---|
| Unit height | 74" | 69.375" | -4.625" |
| Unit depth | 13.625" | 14.625" | +1" |
| Unit weight | 330 lbs | 305 lbs | -25 lbs |
| Return Air | 28" x 14" | 19.875" x 11.875" | -8.125" x -2.125" |
| Distance between Supply and Return | 18" | 20.5" | +2.5" |
| Distance from Return to bottom | 32.625" | 27.5" | -5.125" |