Bard W36HA
Bard WL423
Unit depthUnit depthSupply AirReturn AirSupply AirReturn Air27.88"7.88"27.88"13.88"29.88"9.88"29.88"15.88"38.2"42.075"74.563"84.875"17.125"22.432"2.123"2.175"17.93"30"32.75"26.94"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 W36HA Bard WL423 Difference
Distance from the top to Supply2.123"2.175"+0.052"
Mismatch Bard W36HA Bard WL423 Difference
Unit width38.2"42.075"+3.875"
Unit height74.563"84.875"+10.312"
Unit depth17.125"22.432"+5.307"
Unit weight380 lbs500 lbs+120 lbs
Supply Air27.88" x 7.88"29.88" x 9.88"+2" x +2"
Return Air27.88" x 13.88"29.88" x 15.88"+2" x +2"
Distance between Supply and Return17.93"30"+12.07"
Distance from Return to bottom32.75"26.94"-5.81"