Bard W72AF
Bard W42L2
Unit depthUnit depthSupply AirReturn AirSupply AirReturn Air29.88"9.88"29.88"15.88"29.88"9.88"29.88"15.88"42"42.075"93"84.875"25.52"22.432"2.18"2.175"30"30"35.06"26.94"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 W72AF Bard W42L2 Difference
Unit width42"42.075"+0.075"
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 from the top to Supply2.18"2.175"-0.005"
Distance between Supply and Return30"30"0"
Mismatch Bard W72AF Bard W42L2 Difference
Unit height93"84.875"-8.125"
Unit depth25.52"22.432"-3.088"
Unit weight568 lbs475 lbs-93 lbs
Distance from Return to bottom35.06"26.94"-8.12"