Bard W18H1
Marvair MGA3090
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 W18H1 Marvair MGA3090 Difference
No matches in measurement - - -
Mismatch Bard W18H1 Marvair MGA3090 Difference
No mismatches in measurement - - -