Bard WL181
Bard WL251
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"70.563"17.125"17.125"2.183"2.183"20.56"20.56"28.06"28.06"Supply AirReturn AirSupply AirReturn Air
DIRECT REPLACEMENT

These units dimensions are physically identical. Replacing one for the other shouldn’t be any problem just make sure to double check your capacity and voltages.

Match Bard WL181 Bard WL251 Difference
Unit width33.3"33.3"0"
Unit height70.563"70.563"0"
Unit depth17.125"17.125"0"
Unit weight300 lbs300 lbs0 lbs
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"2.183"0"
Distance between Supply and Return20.56"20.56"0"
Distance from Return to bottom28.06"28.06"0"
Mismatch Bard WL181 Bard WL251 Difference
No mismatches in measurement - - -