Bard WG60
Bard WG4SF
Unit depthUnit depthSupply AirReturn AirSupply AirReturn Air29.88"9.88"29.88"15.88"29.88"9.88"29.88"15.88"42"42"87.5"93.25"27.25"27.25"2.99"4.74"30"30"28.75"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 WG60 Bard WG4SF Difference
Unit width42"42"0"
Unit depth27.25"27.25"0"
Supply Air29.88" x 9.88"29.88" x 9.88"0"
Return Air29.88" x 15.88"29.88" x 15.88"0"
Distance between Supply and Return30"30"0"
Mismatch Bard WG60 Bard WG4SF Difference
Unit height87.5"93.25"+5.75"
Unit weight675 lbs750 lbs+75 lbs
Distance from the top to Supply2.99"4.74"+1.75"
Distance from Return to bottom28.75"32.75"+4"