Dundas Jafine BPGH4WZW Progard Vent Hood, 4", WhitePro Gard exhaust hoods are part of the Pro Series product line up. The product features a louvered damper system that prevents cold air, snow or rain from entering the home and the louvers have been redesigned to prevent them from sticking. The Pro Gard exhaust hood also features a low profile pest guard that helps to keep pests out and can be easily removed to allow for cleaning of the duct. Additional features include a recessed caulk line to assist