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Your cart is empty.Flue Extensions & Non-Duct Kits Optional Non-Duct Kit for Broan® BBN Powerpack Insert Series (0) 0.0 out of 5 stars. Write a review Questions & Answers The Non-Ducted Kit for the Broan® BBN powerpack insert series. Provides use of a flush-fit insert in an application where it is not feasible to duct a range hood to an external location. Some duct work is required for non-ducted application. Model: HARKBN30 BUY NOW (0) 0.0 out of 5 stars. Write a review Questions & Answers Model: HARKBN30 BUY NOW For ductless application of BBN powerpack inserts Provides use of an insert in an application where it is not feasible to duct a range hood to an external location Includes a charcoal filter, a soffit grille, a 90-degree stack boot, a 7 in. round duct and a 6 in. to 7 in round transition Use with 99010464-130 replacement charcoal filter Refer to the Installation Guide provided with your range hood or see the FAQ section on this site for proper installation and maintenance