Bard W18A1
Bard W18HF
Unit depthUnit depthSupply AirReturn AirSupply AirReturn Air19.88"7.88"19.88"11.88"19.88"7.88"19.88"11.88"33.3"33.3"70.563"74.56"22.125"17.13"2.183"2.18"20.56"20.56"28.06"32.06"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 W18A1 Bard W18HF Difference
Unit width33.3"33.3"0"
Supply Air19.88" x 7.88"19.88" x 7.88"0"
Return Air19.88" x 11.88"19.88" x 11.88"0"
Distance from the top to Supply2.183"2.18"-0.003"
Distance between Supply and Return20.56"20.56"0"
Mismatch Bard W18A1 Bard W18HF Difference
Unit height70.563"74.56"+3.997"
Unit depth22.125"17.13"-4.995"
Unit weight335 lbs329 lbs-6 lbs
Distance from Return to bottom28.06"32.06"+4"