Bard W18A1
Bard W42G3
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 W18A1 Bard W42G3 Difference
No matches in measurement - - -
Mismatch Bard W18A1 Bard W42G3 Difference
No mismatches in measurement - - -