This unit appears to be very good quality.  I'm a registered professional electrical engineer, and the internal workings appear to be "heavy duty" and not like a typical vent hood.  Stainless baffle system looks great from underneath.  Also, my son and I installed and we like the way the crown molding slides into place on the stainless-steel track.  Plenty of chimney was provided.  The finish was perfect.  Packaging for shipment was good and provided good protection from damage.