Bought this back in January when I first bought my bus, been sitting in it's box ever since, unwilling to cut the vent hole in the bus, SO I ordered a ventless version. Not able to return, only opened to inspect look at manual and piping.
They sell for $250 + on amazon, I will sell this one for $200, with free pickup in Anaconda MT or shipping will be $12 for ground lower 48 states. PayPal is much preferred.
If you want a pic let me know, to lazy to walk over there right now