Product review (4 stars): Very Good Basic Range Hood
The Broan QS BL 30  was exceptionally easy  to install.  Essentially it slides onto four screws.  The fact that it was only 17 pounds helped in terms of lining it up.  I would rate the noise level as "average" on high and "quiet" on low. It's 220 cfms are good for our smaller kitchen area (we live in a condo).  The best part about it was that it was almost  $100 cheaper, than a simialr item at Lowe's.  Taking all these factors into account, I would highly recommend this range hood.