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 WH181 | Bard WG4S1 | Difference |
|---|---|---|---|
| No matches in measurement | - | - | - |
| Mismatch | Bard WH181 | Bard WG4S1 | Difference |
|---|---|---|---|
| Unit width | 32.875" | 42" | +9.125" |
| Unit height | 70.5" | 97.5" | +27" |
| Unit depth | 16.875" | 27.25" | +10.375" |
| Unit weight | 300 lbs | 685 lbs | +385 lbs |
| Supply Air | 19.875" x 7.875" | 29.88" x 9.88" | +10.005" x +2.005" |
| Return Air | 19.875" x 11.875" | 29.88" x 15.88" | +10.005" x +4.005" |
| Distance from the top to Supply | 2" | 2.99" | +0.99" |
| Distance between Supply and Return | 20.75" | 30" | +9.25" |
| Distance from Return to bottom | 28" | 38.75" | +10.75" |