Bard W18H1
Bard W72AC
Unit depthUnit depthSupply AirReturn AirSupply AirReturn Air19.88"7.88"19.88"11.88"29.88"9.88"29.88"15.88"33.3"42"70.563"93"17.125"25.52"2.183"2.18"20.56"30"28.06"35.06"Supply AirReturn AirSupply AirReturn Air
MISMATCH

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 W18H1 Bard W72AC Difference
Distance from the top to Supply2.183"2.18"-0.003"
Mismatch Bard W18H1 Bard W72AC Difference
Unit width33.3"42"+8.7"
Unit height70.563"93"+22.437"
Unit depth17.125"25.52"+8.395"
Unit weight360 lbs555 lbs+195 lbs
Supply Air19.88" x 7.88"29.88" x 9.88"+10" x +2"
Return Air19.88" x 11.88"29.88" x 15.88"+10" x +4"
Distance between Supply and Return20.56"30"+9.44"
Distance from Return to bottom28.06"35.06"+7"