Bard W18L2
Marvair HVEA24
Unit depthUnit depthSupply AirReturn AirSupply AirReturn Air19.88"7.88"19.88"11.88"28"8"28"14"33.3"42.05"70.563"70.59"17.125"17.45"2.183"1.88"20.56"17.93"28.06"28.78"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 W18L2 Marvair HVEA24 Difference
Unit height70.563"70.59"+0.027"
Supply Air19.88" x 7.88"28" x 8"+8.12" x +0.12"
Mismatch Bard W18L2 Marvair HVEA24 Difference
Unit width33.3"42.05"+8.75"
Unit depth17.125"17.45"+0.325"
Unit weight325 lbs445 lbs+120 lbs
Return Air19.88" x 11.88"28" x 14"+8.12" x +2.12"
Distance from the top to Supply2.183"1.88"-0.303"
Distance between Supply and Return20.56"17.93"-2.63"
Distance from Return to bottom28.06"28.78"+0.72"