Bard WH181
Bard 24WH6
Unit depthUnit depthSupply AirReturn AirSupply AirReturn Air19.875"7.875"19.875"11.875"19.875"7.875"19.875"11.875"32.875"32.375"70.5"69.375"16.875"14.625"2"1.625"20.75"20.5"28"27.5"Supply AirReturn AirSupply AirReturn Air
OPENING MATCH

Your openings match up but double check the cabinet surroundings. Over time equipment coils have gotten larger for better efficiency and cabinet dimensions have changed.

Match Bard WH181 Bard 24WH6 Difference
Supply Air19.875" x 7.875"19.875" x 7.875"0"
Return Air19.875" x 11.875"19.875" x 11.875"0"
Distance between Supply and Return20.75"20.5"-0.25"
Mismatch Bard WH181 Bard 24WH6 Difference
Unit width32.875"32.375"-0.5"
Unit height70.5"69.375"-1.125"
Unit depth16.875"14.625"-2.25"
Unit weight300 lbs325 lbs+25 lbs
Distance from the top to Supply2"1.625"-0.375"
Distance from Return to bottom28"27.5"-0.5"