Bard W36HF
Bard W42HC
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"74.56"84.88"17.13"25.52"2.12"2.18"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 W36HF Bard W42HC Difference
Distance from the top to Supply2.12"2.18"+0.06"
Mismatch Bard W36HF Bard W42HC Difference
Unit width38.2"42"+3.8"
Unit height74.56"84.88"+10.32"
Unit depth17.13"25.52"+8.39"
Unit weight385 lbs500 lbs+115 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"