Bard 36WH6
Bard 18WH4
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 36WH6 Bard 18WH4 Difference
No matches in measurement - - -
Mismatch Bard 36WH6 Bard 18WH4 Difference
No mismatches in measurement - - -