Bard W6RV1
Bard W18HB
Unit depthUnit depthSupply AirReturn AirSupply AirReturn Air29.88"9.88"29.88"15.88"19.88"7.88"19.88"11.88"42.075"33.3"94.875"74.563"22.432"17.125"2.175"2.183"30"20.56"36.94"32.06"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 W6RV1 Bard W18HB Difference
Distance from the top to Supply2.175"2.183"+0.008"
Mismatch Bard W6RV1 Bard W18HB Difference
Unit width42.075"33.3"-8.775"
Unit height94.875"74.563"-20.312"
Unit depth22.432"17.125"-5.307"
Unit weight520 lbs329 lbs-191 lbs
Supply Air29.88" x 9.88"19.88" x 7.88"-10" x -2"
Return Air29.88" x 15.88"19.88" x 11.88"-10" x -4"
Distance between Supply and Return30"20.56"-9.44"
Distance from Return to bottom36.94"32.06"-4.88"