Bard 42WH1
Bard 20WA4
MISMATCH

These units don’t appear to have much in common. If you’re replacing one with the other, you’ll need to make some modifications to wall, unit or something in between with a plate or adapter curb.

Match Bard 42WH1 Bard 20WA4 Difference
No matches in measurement - - -
Mismatch Bard 42WH1 Bard 20WA4 Difference
No mismatches in measurement - - -