Bard 36WH6
Bard W36AA
Unit depthUnit depthSupply AirReturn AirSupply AirReturn Air28"8"28"14"27.88"7.88"27.88"13.88"38.25"38.2"74"74.563"15.25"17.125"1.375"2.123"18"17.93"32.625"32.75"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 36WH6 Bard W36AA Difference
Unit width38.25"38.2"-0.05"
Supply Air28" x 8"27.88" x 7.88"-0.12" x -0.12"
Return Air28" x 14"27.88" x 13.88"-0.12" x -0.12"
Distance between Supply and Return18"17.93"-0.07"
Distance from Return to bottom32.625"32.75"+0.125"
Mismatch Bard 36WH6 Bard W36AA Difference
Unit height74"74.563"+0.563"
Unit depth15.25"17.125"+1.875"
Unit weight400 lbs380 lbs-20 lbs
Distance from the top to Supply1.375"2.123"+0.748"