Exhaust Fan on OTC Microwave
Sadly, my JVM150 is installed on an inside wall in a kitchen that has another floor above it so there was no way to vent it to the outside.
Consequently, the exhaust air is just filtered and then blown out the front grill.
The two speed blower seems quite powerful - and NOISY on the high speed.
I would say that it is moderately effective in this configuration.