Bard WA421
Bard W24AB
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 WA421 Bard W24AB Difference
No matches in measurement - - -
Mismatch Bard WA421 Bard W24AB Difference
No mismatches in measurement - - -