Product review (3 stars): Not Up To PAR
Blower cage was not properly aligned and scraped the housing when operated. I had to remove the guts of the unit after it was installed and center the blower cage on  it's axel. Most would have a service call or have to remove and return. The blower cage is held in place by a small set screw requiring an allen wrench to adjust. I'm a Broan fan and as a builder use their products regularly with much success; tighten it up guys!