Dundas Jafine ProShield Dryer Vent Hood features a round design with an innovative spring-loaded damper system that ensures complete noise control without any flapping louvers or dampers during changing weather conditions. This advanced damper system effectively prevents pests and rodents from entering the vent, enhancing home safety. When the dryer is in use, the air pressure opens the damper to allow efficient exhaust, and once the dryer is turned off, the damper securely closes to block any unwanted entry. The vent hood is coated with a UV-resistant finish to prevent discoloration over time and is paintable to match your home's exterior. It includes a 4" x 10" aluminum tailpiece and is compatible with brick, concrete, or siding installations. The product comes retail boxed with easy-to-follow installation instructions and is finished in a clean white color. Model Number: BPSH4WZW