Bard MAC36
Bard WA301
Unit depthUnit depthSupply AirReturn AirSupply AirReturn Air27.88"7.88"27.88"13.88"27.875"7.875"27.875"13.875"32.375"37.875"74"70.5"13.625"16.875"1.615"2"18"18"32.625"28.75"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 MAC36 Bard WA301 Difference
Supply Air27.88" x 7.88"27.875" x 7.875"-0.005" x -0.005"
Return Air27.88" x 13.88"27.875" x 13.875"-0.005" x -0.005"
Distance between Supply and Return18"18"0"
Mismatch Bard MAC36 Bard WA301 Difference
Unit width32.375"37.875"+5.5"
Unit height74"70.5"-3.5"
Unit depth13.625"16.875"+3.25"
Unit weight315 lbs355 lbs+40 lbs
Distance from the top to Supply1.615"2"+0.385"
Distance from Return to bottom32.625"28.75"-3.875"