Product review (5 stars): it worked
I wasn't expecting much when I ordered this, but once we got everything hooked up and I saw all the crap that this thing was pushing out I was shocked.  Our vent is about 12 feet and it is in a straight line so it wasn't difficult.  You can't beat the price though.  I got a quote from a local company and it was going to cost $150.  We plan on using it at least once a year.  I have recommended this to everyone I know.  It is totally worth it.