Dundas Jafine ProMax exhaust hoods feature a robust, wide mouth cap for optimum airflow and snug fit backdraft damper that helps to prevent cold air, snow or rain from entering the home. The damper has been redesigned for great noise reduction. Additional features include a removable pest screen that helps to keep pests out and allows for easy cleaning of the duct as well as a snap on pipe to cap assembly that eliminates the need for lint trapping staples. All ProMax products have a UV-resistant coating to prevent the cap from discoloring and the white versions are paintable to match the exterior of your home.