Bard WA121
Bard W42G4
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 WA121 Bard W42G4 Difference
No matches in measurement - - -
Mismatch Bard WA121 Bard W42G4 Difference
No mismatches in measurement - - -