Bard W12A2
Marvair AVHA12 (Cabinet C)
Unit depthUnit depthSupply AirReturn AirSupply AirReturn Air17"5"17"10.05"17"5"17"10"30.29"30.125"45.8"48"14.67"14.75"2.18"2.25"5.03"5"23.54"25.75"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 W12A2 Marvair AVHA12 (Cabinet C) Difference
Unit width30.29"30.125"-0.165"
Unit depth14.67"14.75"+0.08"
Supply Air17" x 5"17" x 5"0"
Return Air17" x 10.05"17" x 10"0" x -0.05"
Distance from the top to Supply2.18"2.25"+0.07"
Distance between Supply and Return5.03"5"-0.03"
Mismatch Bard W12A2 Marvair AVHA12 (Cabinet C) Difference
Unit height45.8"48"+2.2"
Unit weight160 lbs185 lbs+25 lbs
Distance from Return to bottom23.54"25.75"+2.21"