Product review (5 stars): Massive power, quiet, efficient, effective
Awesome blower- very happy I decided to shell out extra funds on this model. The unit is super quiet hanging in my thinly insulated crawl space. I pair this unit with the broan elite downdraft. At low power it sucks up all vapors and I will likely never use more than 50% power.  I kept the true 10" ducting since the unit's inline comes with 10" transitions as a default which helps.  I actually installed vibration dampers (sound deadening matts) similar to what people use in their cars.  I'm pretty sure this adds to the rattle free experience.  The result is whisper quiet operation that makes its massive power seem effortless and as if it's coming from nowhere.  I installed everything myself other than electrical.