Bard WA251
Bard W18H2
Unit depthUnit depthSupply AirReturn AirSupply AirReturn Air19.875"7.875"19.875"11.875"19.88"7.88"19.88"11.88"32.875"33.3"70.5"70.563"16.875"17.125"2"2.183"20.75"20.56"28"28.06"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 WA251 Bard W18H2 Difference
Unit height70.5"70.563"+0.063"
Unit depth16.875"17.125"+0.25"
Supply Air19.875" x 7.875"19.88" x 7.88"+0.005" x +0.005"
Return Air19.875" x 11.875"19.88" x 11.88"+0.005" x +0.005"
Distance from the top to Supply2"2.183"+0.183"
Distance between Supply and Return20.75"20.56"-0.19"
Distance from Return to bottom28"28.06"+0.06"
Mismatch Bard WA251 Bard W18H2 Difference
Unit width32.875"33.3"+0.425"
Unit weight300 lbs360 lbs+60 lbs