Camco RV Roof Vent Cover, Opens For Easy Cleaning, Aerodynamic Design, Easily Mounts to RV With Included Hardware - Silver (40473) Allows Fresh Air Ventilation and Light: Allows you to leave the vent open rain or shine Easy to Clean: Features removable louvers for easy cleaning; Includes built-in insect screen Aerodynamic Design: Aerodynamic styling offers high flow ventilation with a design that allows you to keep it open when it’s raining, or even when you’re traveling UV Stabilized Construction: UV stabilized resin for years of rugged use Hardware Included: Mounting hardware included; Mounts to existing 14” x 14” roof vents MODEL NO - 40473