Ok, not sure about this one so I would be looking for input from all that may view this thread.
Is there an issue with a microwave being ducted through the wall and the output vent flapper not being installed. I removed my microwave because the fan was not coming on without a lot of start/stops from the uwave panel, no problem with uwave off the wall, but I found that the flapper was missing for the exhaust vent. I have a louvered grill outside but it does not close when uwave not exhausting.
Dometic says the coach builder may have removed it, I can't figure out why they would do that. Granted the flapper does not open fully but plenty of air will be exhausted.
Anyone have a good reason for having/not having the flapper?
