Bard WA721
Bard W18HB
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 WA721 Bard W18HB Difference
No matches in measurement - - -
Mismatch Bard WA721 Bard W18HB Difference
No mismatches in measurement - - -