Product review (3 stars): Must have for non-ducted Broan hood
These carbon filters fit on top of the aluminium filters for the Broan model QP330SS range hood. My hood is non-ducted, so it is mandatory the use of these carbon filters to control odors. They do a fairly good job of containing and filtering grease particles, but most of the cooking odors are vented out to the kitchen in a non-ducted installation. The carbon filters become grease-impregnated in about three to four months, depending on frequency of pan frying and sauteing, and must be changed. At little more than 20.00 dollars a pair, it is not exactly inexpensive, but they will catch a good part of grease particles that otherwise would end up on the walls, ceiling, cabinets, etc.