Marvair ECUA18
Bard WG42
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 Marvair ECUA18 Bard WG42 Difference
No matches in measurement - - -
Mismatch Marvair ECUA18 Bard WG42 Difference
No mismatches in measurement - - -