Bard WA361
Marvair AVP36
Unit depthUnit depthSupply AirReturn AirSupply AirReturn Air27.875"7.875"27.875"13.875"28"8"28"14"37.875"41.69"70.5"70.44"16.875"17.25"2"2.003"18"18"28.75"28.437"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 WA361 Marvair AVP36 Difference
Unit height70.5"70.44"-0.06"
Unit weight355 lbs355 lbs0 lbs
Supply Air27.875" x 7.875"28" x 8"+0.125" x +0.125"
Return Air27.875" x 13.875"28" x 14"+0.125" x +0.125"
Distance from the top to Supply2"2.003"+0.003"
Distance between Supply and Return18"18"0"
Mismatch Bard WA361 Marvair AVP36 Difference
Unit width37.875"41.69"+3.815"
Unit depth16.875"17.25"+0.375"
Distance from Return to bottom28.75"28.437"-0.313"