Product review (2 stars): Poor range hood
most 42" bough are intended to upgrade older existing range hood. Broan has decided to make it difficult. Most older range hood are connected to a 7" exhaust tube. Broan changed the connection to a small rectangular port, as well as making the hood much deeper. This resulted in the need of expensive cabinet modification as well as the need for an adapter for the exhaust. Really, what were they thinking ? or were they ?  In addition to this, the smaller exhaust port has proven to be very ineffective. We held a frying pan with hot butter emitting smoke right up under the range hood with fan on MAX., and watched smoke escaping outside the hood. Our next purchase will require more research on a product.